I. Analysis of unknowns (component analysis) and formulation

Zhongke Testing provides customers with formula analysis of multiple products every year, involving electronics, textiles, daily chemicals, plastics, rubber and other fields, as well as routine testing and qualitative and quantitative analysis services. Specifically include the following types of products:

1. Polymer and polymer materials

(1) Plastic products

Plastic particles, processing masterbatch, plastic wire, plastic rope, plastic belt, hose, bellows, hard tube, plastic sheet, plastic film, plastic bearing, plastic switch, processing masterbatch, plastic doors and windows, plastic rod, plastic powder, CD, artificial leather cable, foam material.

(2) Rubber products

Oil resistant hose, O-ring, antistatic film, sealant nail, conveyor belt, sealing strip, insulating sheath, tire, rubber pad, hose, air conditioning hose, gas hose, brake cup, door and window seal, resistance Fuel conveyor belt, shock absorbing rubber, waterproof membrane, rubber shoes, silencer damping film.

(3) Coatings: photocurable coatings, latex paints, waterproof coatings, high temperature resistant coatings, etc.

(4) Textiles: quantitative analysis of textiles, quantitative analysis of fiber mixtures, wool fiber and animal hair composition analysis, etc.

(5) Other materials, please consult the specific situation.

2. Fine chemical products

(1) Additives: coating additives, rubber additives, plastic additives, combustion improvers, fluxes, electroplating additives, textile leather additives, electronic additives, ceramic additives, textile leather additives, water treatment agents Wait

(2) Cleaning agents: soap and synthetic detergent, detergent, toilet spirit, metal cleaning agent, marble cleaning agent, silicon wafer cleaning agent) cement grinding aid, cutting fluid, paint stripper, mold release agent; Flocculant, scale inhibitor, crude oil demulsifier, degreasing water (powder), wax removal water; phosphating solution, polishing liquid (wax), brightener, electroplating solution, etc.

(3) Adhesives: emulsion (white latex, pressure sensitive adhesive, fabric coating emulsion, flocking adhesive, printing emulsion, laminating adhesive, label adhesive, non-woven adhesive, etc.), double-sided adhesive, polyurethane adhesive, epoxy Glue, PVC glue, universal glue, filter glue, self-adhesive, light curing glue, hot melt adhesive, AB glue, silicone glue, wood glue, phenolic resin glue, caulking glue, potting glue, building emulsion setting glue.

(4) For other categories of products, please consult.



3. Spices, flavors and smells

(1) Natural: essential oils Extracts, tinctures, oleoresins, net oils, etc.

(2) Synthetic: vanillin, coumarin, ionone, citronella oil, mountain seed oil, eucalyptus oil, sassafras oil, cedar oil, turpentine oil, castor oil, fusel oil, aromatic hydrocarbons and phenols, etc.



4. Cosmetics

(1) Emulsions Refer to various hair creams such as creams, honey, lotions, masks, hair creams, hair gels, etc.

(2) Powder Various kinds of powder and talcum powder.

(3) Beauty refers to lipstick, eye shadow, mascara, nail polish, etc.

(4) Perfume Perfume, cologne, toilet water.

(5) Shampoo refers to shampoo, body lotion and conditioner.

(6) Hairdressing refers to hair dyeing, perming, and hairdressing supplies.

(7) therapeutic effects



5. Organic solvents

(1) Common organic solvents: hydrocarbons, halogenated hydrocarbons, alcohols, ketones, esters, phenols, and the like.

(2) Solvents for industrial use: Tianna water, degreased oil, thinner, pine perfume, nitro varnish, thinner, white electric oil, etc.



6. Confirmation of unknown compound structure



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Second, the comprehensive utilization of renewable resources identification

The Guangzhou Institute of Chemistry of the Chinese Academy of Sciences is the provincial testing agency for the process quality inspection of resources comprehensive utilization products in Guangdong Province. The Guangdong Provincial Economic and Information Technology Commission has designated the testing agency to be responsible for the comprehensive utilization of resources (renewable resources) in Guangdong Province.

Testing items: 1. Quality inspection of products and raw materials

2. Proof of raw material ratio (content ratio of raw materials)

Reducing the scope of labor VAT inspection:

1. Waste water (liquid), waste gas, waste residue

Using electricity or heat generated by waste heat and residual pressure generated in industrial production processes;

Dry sludge and fuel produced from oily sewage, organic wastewater, sludge generated after sewage treatment, etc.;

a metal produced from waste color developing solution, electrolytic waste, electroplating waste, smelting slag, etc.;

Alumina, active calcium silicate produced from fly ash and coal gangue

2. Renewable resources

Electricity, heat, and fuel produced from rice husks, peanut hulls, three remnants, and sub-small fuelwood;

Feed grade mixed oil produced from waste animal oil and vegetable oil;

Industrial oils such as lubricating base oil, gasoline and diesel produced from recycled waste mineral oil;

a metal produced from waste batteries, spent catalyst, waste bulbs (tubes), used motors, etc.;

Recycled polyester special materials and recycled plastic products for chemical fiber produced from waste plastics;

Fiber yarns, woven fabrics, recycled polyester products, etc., produced from waste natural fibers, chemical fibers and products.

Reducing the comprehensive utilization of resources, corporate income tax detection scope:

1. Symbiotic and associated mineral resources: kaolinite and bentonite produced by coal-based symbiosis, associated mineral resources and gas as raw materials, electricity, heat and gas
2. Waste water (liquid), waste gas, waste slag, brick, wallboard products, iron, salt, etc. produced from fly ash, chemical waste, industrial waste, etc., using industrial and mining wastewater and municipal sewage as raw materials

Biodiesel and industrial oil produced from waste biomass oil and waste lubricating oil

Sulfur, sulfuric acid, desulfurization gypsum, combustible gas, etc. produced from coke oven gas, fermentation waste gas, flare gas, etc.

3. Renewable resources

Metals and non-metals produced from waste batteries, electronic and electrical products, waste photographic materials, and waste bulbs (tubes);

Wood-based panels and products thereof produced from sawdust, bark and twigs

Plastic products produced from waste plastics

Refurbished tires and rubber powders produced from waste and used tires

Papermaking raw materials, binders, recycled polyester, etc. produced from waste natural fibers; chemical fibers and their products

Wood substitute products made from crop straw and shell skin, electricity, heat and gas



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Third, the full analysis of the drug approval and structural confirmation

Zhongke Testing provides customers with a full range of drug approval and structural confirmation analysis, complete equipment, experienced personnel, and complete confirmation of drug structure through the relevant departments. It is the designated chemical chemical structure confirmation unit in South China.

The main projects are raw materials, pharmaceutical intermediates, new drug confirmation and structural analysis and identification (standard drugs or existing standard map drugs at home and abroad); food health product content identification, compound component identification, biological protein sample analysis, amino acids Composition analysis, protein sequence analysis, etc.

The main test methods include: infrared spectroscopy; mass spectrometry; nuclear magnetic resonance analysis; ultraviolet spectroscopy; X-ray powder diffraction analysis; elemental analysis; thermal analysis (DSC, TG); optical rotation analysis, chemical analysis and other methods.

Fourth, food, agricultural products, feed and food-grade contact materials testing

1, food, agricultural products, feed testing

(1) Physical and chemical projects

Taurine, hydroxymethylcoumarin, melamine, caffeine, fatty acid, alum, total alkalinity, L-hydroxyproline, aflatoxin B1, rice yeast, carbonyl, formaldehyde, nitrite, Total fat, sulfur dioxide, specific optical rotation, refractive index, particle size, fineness, refractive index, melting point, net content, etc.



(2) Heavy metals and trace elements

Lead, arsenic, mercury, copper, magnesium, zinc, tin, calcium, chromium, fluorine, iodine, selenium, iron, manganese, etc.



(3) Additives

Preservative: sorbic acid (potassium), benzoic acid (sodium);

Colorants: carmine, amaranth, lemon yellow, etc.

Sweetener: Sodium saccharin, cyclamate

Antioxidants: di-tert-butyl-p-cresol, phytic acid, TBHQ, etc.

Bleach: sulfite, sulfur dioxide

Color protection agent: nitrate, nitrite

Flour treatment agent: benzoyl peroxide

Moisture retention agent: phosphate, etc.





(4) Microbiological testing

Total bacteria, coliforms, molds and yeasts, Escherichia coli, Shigella, Staphylococcus aureus, Salmonella, pathogenic bacteria, etc.



2, food grade contact material testing

US regulations CFR title 21

EU Regulations EC No 1935/2004

German regulations LFGB 30&31

French regulations DGCCRF 2004-64

V. Medical and health product testing

(1) Physical and chemical indicators

Moisture, ash, infrared identification, specific rotation, density, net content, etc.

(2) Chinese medicine, health food ingredients

Total flavonoids, inositol, L-carnitine, proanthocyanidins, soy isoflavones, allicin, lycopene, melatonin, superoxide dismutase (SOD), ganoderma lucidum, caffeine, emodin, vitamins, Minerals, etc.



(3) Western medicine ingredients

Clindamycin hydrochloride, acetaminophen, clarithromycin, metronidazole, ceftriaxone, strontium ranelate, vitamin A acetate, betamethasone dipropionate, etc.



(4) Heavy metal detection

Lead, cadmium, arsenic, mercury, copper, etc.



(5) Microbiological testing

Total number of colonies, coliforms, molds and yeasts, pathogenic bacteria, etc.



(6) Various accessories

--cyclodextrin, crospovidone, etc.



6. Detection of pesticides, veterinary drugs and fertilizers

1. Pesticide residue detection

Organochlorines such as DDT, hexachlorocyclohexane, organophosphorus pesticides such as dichlorvos and methamidophos, pyrethroids such as deltamethrin and cypermethrin, carbamates such as carbaryl and carbofuran, and a total of more than 400 kinds. test



2. Veterinary drug residue testing project

Nitrofurans, dyes, tetracyclines, fluoroquinolones, sulfonamides, β-lactams, chloramphenicols, hormones, avermectins, etc.



3. Fertilizer testing

Abrasion rate, particle size, crush resistance, fineness, trace elements (calcium, copper, iron, magnesium, manganese, zinc, selenium, fluorine, etc.), heavy metals (lead, chromium, cadmium, mercury, arsenic, etc.), moisture, ammonia nitrogen , amino acids, organic matter, pH, total nutrients



VII. Environmental testing and monitoring

1. Indoor air detection

Formaldehyde, ammonia, benzene, (benzene/toluene/xylene), total volatility, organic matter (TVOC), benzopyrene, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, ozone, respirable particulate matter, antimony, stone radioactivity Temperature, relative humidity, air flow rate, atmospheric pressure, fresh air volume, total number of colonies, etc.



2. Industrial waste gas detection

Fluoride, chlorine, hydrogen fluoride, aniline, particulate matter, acrylonitrile, sulfuric acid mist, chromic acid mist, phenols, nitrobenzenes, nitrogen oxides, asphaltic acid, vinyl chloride, nickel and its compounds, tin and its compounds, Lead and its compounds, etc.



3. Water quality testing range

Natural mineral water, drinking water, drinking water, industrial wastewater, seawater, etc.



4. Water quality testing project

Test items	Project Description
Physical and chemical indicators	Chromaticity, turbidity, total hardness, alkalinity, acidity, transparency, chemical oxygen demand COD, biological oxygen demand BOD5, permanganate index, dissolved oxygen DO, residue, volatile phenol, Kjeldahl nitrogen, mineralization Degree
cation	Potassium K, calcium Ca, sodium Na, magnesium Mg, iron Fe, divalent iron Fe2+, ferric iron Fe3+,
Anion	Fluoride ion F-, chloride ion Cl-, nitrate ion NO3-, sulfate ion SO42-, phosphate ion PO42-, etc.
Heavy metal	Lead Pb, mercury Hg, chromium Cr, cadmium Cd, arsenic As, hexavalent chromium Cr6+, silicon dioxide, chromium Cr, strontium Ba, silver Ag, antimony, bismuth, cobalt, antimony, vanadium, indium, antimony, antimony, uranium Wait
Inorganic species	Erosion reduction, suspended solids SS, salinity, total salt, dissolved total solids TDS, free carbon dioxide CO2, aggressive carbon dioxide CO2, ammonia nitrogen NH3-N, cyanide CN-, etc.
Organic species	Aniline compounds, adsorbable organic halogens (AOX), total organic halides (TOX), semi-volatile organic compounds, volatile halogenated hydrocarbons, phenolic compounds, etc.
Hygiene indicators	Total bacteria, coliforms, total E. coli, etc.

Eight, daily chemical product testing

1, cosmetics testing

General items: formaldehyde, thioglycolic acid, hydroquinone, phenol, vitamins, amino acids, etc.

Alpha-hydroxy acid: tartaric acid, glycolic acid, malic acid, lactic acid, citric acid, etc.

Inorganic substances: soluble zinc salts, boric acid and borate, mercury, arsenic, lead, free hydroxide, etc.

Microorganisms: total number of bacteria, fecal coliforms, Staphylococcus aureus, etc.

Preservatives: benzyl alcohol, phenoxyethanol, benzoic acid, etc.

Sunscreen: benzophenone, p-aminobenzoic acid, ethyl hexyl cinnamate, etc.

Sex hormones: diethylstilbestrol, estradiol, testosterone, methyltestosterone, progesterone, etc.

Dyes in hair dyes: aminophenol, resorcinol, phenylenediamine



2, food container detection

Loss on drying, burning residue, evaporation residue, potassium permanganate consumption, formaldehyde, n-hexane extract, harmful heavy metals, etc.





IX. Detection of harmful chemical substances in toys, stationery, textiles and leather

1. Detection of toxic and hazardous chemicals in toys

Lead content, antimony, arsenic, antimony, cadmium, chromium, lead, mercury, selenium, phthalate, volatile organic compound (VOC) content, benzene, toluene, ethylbenzene and xylene

2. Detection of toxic chemicals in textiles

Heavy metal content, pH of water extract, organochlorine insecticide residue, formaldehyde, azo dye, pentachlorophenol residue, organochlorine insecticide residue, toluene, styrene, aromatic compounds, etc.

3. Detection of toxic and harmful chemicals in leather

Free formaldehyde, organic chlorine carrier, pH, heavy metals, banned azo dyes, special odors (such as musty, malodor, fishy or other odor, flame retardants, etc.





X. Detection of toxic and hazardous substances in electronic appliances

1. RoHS six hazardous substances detection

Cadmium and cadmium compounds Cd, lead and lead compounds Pb, mercury and mercury compounds Hg, hexavalent chromium compounds Cr6+, polybrominated biphenyls PBBs, polybrominated diphenyl ethers PBDEs

2, halogen

Fluorine, chlorine, bromine, iodine

3. Polycyclic aromatic hydrocarbons

Benzo(a)pyrene, naphthalene, 1-methylnaphthalene, terpene, anthracene, anthracene, anthracene, etc.

4, phthalates

Benzyl phthalate, diisononyl phthalate, diethylhexyl phthalate, di-n-octyl phthalate, etc.



XI, oil quality testing

1. Petrochemical products routine testing project

l petroleum benzene, petroleum toluene, p-(o-, m-) xylene, mixed aromatics, methyl tert-butyl ether, isopropyl acetate, methyl acetate, vinyl acetate, acrylic acid, acrylate, acetonitrile, acrylonitrile, etc.

l Purity analysis, impurity analysis, distillation range, density, acidity, color and metal element analysis.



2. Conventional testing items for gasoline and diesel for vehicles

l Copper corrosion, thiol sulfur, vapor pressure, oxidation stability, benzene content, oxygen content, sulfur content and mechanical impurities, actual gum, residual carbon, octane number, cetane number, etc.



3. Routine testing items for lubricating oil and grease

l Pollution level of solid particles, low temperature dynamic viscosity, boundary pumping temperature, high temperature and high shear viscosity, gel index, etc.

l High temperature sediment, Noah's evaporation loss, foam characteristics, water separation, air release value, liquid phase corrosion, etc.





Twelve, metal mineral testing

1. Quantitative analysis of conventional elements

Carbon C, sulfur S, silicon Si, manganese Mn, phosphorus P, nickel Ni, chromium Cr, copper Cu, magnesium Mg, calcium Ca, iron Fe, titanium Ti, zinc Zn, lead Pb, cadmium Cd, bismuth, arsenic As , 锑Sb, sodium Na, potassium K, aluminum Al, etc.

2. Quantitative analysis of precious metal elements

Platinum group metals: osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt), palladium (Pd), gold (Au), silver (Ag)

3. Quantitative analysis of high purity elements

Copper, magnesium, titanium, iron, silicon, gallium, manganese, chromium, nickel, zinc, aluminum, arsenic, chromium, cobalt, phosphorus, molybdenum, vanadium, carbon equivalent, etc.

Thirteen, material performance analysis

1. Performance of polymer materials

(1) Physical properties of polymer materials

Hardness, tensile properties, bending properties, compression properties, tear properties, impact properties, friction properties

Adhesion, pencil hardness, density, size



(2) Thermal properties of polymer materials

Dimensional stability, heat distortion temperature, Vicat softening temperature, melt flow rate, melting point, heat transfer coefficient, embrittlement temperature, glass transition temperature



(3) Combustion properties of polymer materials

Fire test, surface flame propagation test, calorific value test, smoke test, fire resistance test, analysis test of combustion decomposition gas, vertical combustion, horizontal combustion, oxygen index test, smoke density, flash point and spontaneous ignition point test



2, mechanical properties test

Tensile test, high and low temperature tensile test, shear test, torsion test, bending test, flaring test, cupping test, impact test (at different temperatures), Rockwell hardness test, Brinell hardness test, etc.



14. Environmental Reliability Test

1. Climate environmental test

Low temperature test, high temperature test, damp heat test, low air pressure (height) test, temperature and humidity combined cycle test, temperature impact test, rapid temperature change test, mixed gas corrosion test, salt spray corrosion and various photoaging tests.



2. Mechanical environment test

Vibration test, impact test, crash test, drop test, etc.



3. Comprehensive environmental testing

Vibration / temperature / humidity three comprehensive test, temperature + humidity + low pressure three comprehensive.



4, vibration, acoustic characteristics detection

Characteristics of vibration, frequency, displacement, velocity, acceleration, etc., and acoustic characteristics such as sound pressure, sound intensity, and sound power.







Fifteen, industrial fault diagnosis and failure analysis

Comprehensive use of various testing instruments for the analysis of constant, trace and trace substances, qualitative and quantitative analysis of main components and impurity components, organic analysis and inorganic analysis, combined with component analysis and production process analysis, plus detectors The test results are fully analyzed and judged, and the causes of product quality accidents are analyzed and diagnosed, and finally conclusions are drawn, and certain correction suggestions are proposed. Our industrial diagnostic analysis business has involved many industrial fields such as large-scale chemical production, fine chemicals, precision instrument manufacturing and automotive production.

XVI. Identification of cargo transportation conditions, chemical testing and risk identification, MSDS report

1. Conditional identification service and consultation for cargo transportation (air transportation, sea transportation, road transportation, railway transportation)

Category 1: Explosives
Class 2: Gas Category 3: Flammable liquids Category 4: Flammable solids, substances that are prone to spontaneous combustion, substances that release flammable gases in contact with water Category 5: Oxidizing substances and organic peroxides Category 6: Toxicity And infectious substances Category 7: Radioactive substances Category 8: Corrosive substances Category 9: Miscellaneous dangerous goods



Identification criteria:
International Maritime Dangerous Goods Code (IMDG Code)
Railway Dangerous Goods Name List
"Dangerous Goods Name List" (national standard), etc.



2. Identification of physical and chemical parameters and hazard characteristics of chemicals

Physical and chemical parameters	Dangerous characteristics
pH value	Aerosol flammability judgment
Open cup flash point	Flammable liquid judgment
Closed cup flash point	Combustion rate determination
Rand	Self-heating substance judgment
Melting point / melting range	Judging by the release of flammable gas in contact with water
Boiling point	Oxidizing substance judgment
density	Corrosion determination
Viscosity	Determining the self-sustaining exothermic decomposition ability of nitrate-containing fertilizer

Testing standards:

United Nations Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria

GB 19521.1~14

GB/T 21611~21624

GB 12268, GB 6944, GB 13690, etc.





17. Judicial appraisal

1. Forensic toxicant identification

Corrosive poisons: nitric acid, hydrochloric acid, sulfuric acid, sodium hydroxide, phenol, etc.

Volatile poisons: methanol, formaldehyde, cyanide, nitrobenzene, etc.

Metallic poisons: mercury, lead, arsenic, antimony, chromium, magnesium, etc.;
Pesticides: organic phosphorus, organic nitrogen, methyl bromide, etc., rodenticides, such as zinc phosphide, enemy mice, warfarin, etc.;

Toxic animals, plants: oleander, aconite, mandala, etc., snake venom, pufferfish, bee venom and so on.

Bacterial and fungal toxins: Salmonella, Botox, Staphylococcus, Aflatoxin, etc.

Drugs: amphetamines, heroin, ketamine, etc.

2, trace material identification

Organic substances: toxic and hazardous chemicals, pesticides, drugs, stimulants, etc.

Inorganic content: the type and content of inorganic elements, inorganic anions, and inorganic cations.

Air quality: office environment air quality testing, home air quality testing, building engineering air quality testing, etc.

Decoration materials pollution detection: adhesives, water-based coatings, polyurethane coatings, solvent-based wood coatings, etc.

Food: 45 foods such as grain, vegetables, fruits, meat, eggs, poultry, and aquatic products





18, scientific research services - project commitment



I. National Natural Science Foundation of China: Research on Free Radical Structure in Plasma Polymerization Process



2. The analysis and testing fund projects of the Guangzhou Branch of the Chinese Academy of Sciences mainly include:

1. Electrospray ionization mass spectrometry study of surfactants

2. Energy Resolution Mass Spectrometry Application Research

3. Identification of organic small molecule structures by pyrolysis chromatography

4. Application Research of Sadtler Standard Carbon Spectrum Retrieval System in Organic Analysis

5. Study on the method of DSC determination of polymer blend composition

6. Effect of additives on the crystalline form of isotactic polypropylene

7. Study on the structure of organic acid salt stabilizer and its stability to polymer materials by infrared spectroscopy

8. Preparation of cellulose acetate from bagasse pulp by perchloric acid at room temperature or alkali hydrolysis and characterization by GPC

9. Electron microscopic study of microcrystalline cellulose blocking mouse capillaries as cancer treatment materials

10. Application of infrared spectroscopy in research and production of polyether derivatives

11. Infrared spectroscopy study on the aging properties of inorganic particles toughened polyolefin





Third, the main tasks undertaken in recent years are:

1. Development of new color kits, including profiling, formulation, production and practical use (Guangzhou key projects)

2. Development of non-freezing fluids, including profiling, formulation, production and practical use

3. Development of vehicle cleaning agent and production process

4. Development of metal cutting fluid

5. New type of gold watch adhesive for the production of foam fire extinguishing agent

6. Technical development of disposable flux and solder paste

7. Ministry of Science and Technology, Chemical, Chemical and New Materials Industry Analysis and Testing Resource Sharing Service Platform Construction Project

8. Guangdong Provincial Department of Science and Technology Chemical and Chemical Industry Analysis and Testing Resource Sharing Service Platform Project

9. Research on new emergency rescue water treatment equipment and key technologies for forward osmosis (2012 Shunde Major Science and Technology Project)

10. Research and development and industrialization of energy-efficient seawater desalination equipment (2012 Shunde District (second batch) hospitals and municipal cooperation)

11. High-performance furniture and decorative PP composite green preparation and industrialization project (2012 Guangdong-Hong Kong key areas key breakthrough projects)

12. Comprehensive prevention and treatment system for mastitis (special fund project for the construction of animal epidemic prevention system in Guangdong Province in 2012)

13. Research on Silicone Modified Interpenetrating Network (IPN) Waterborne Paint Technology (2012 Ronggui Science and Technology Project)

14. Research on EVA/PET Substrate Modified Silicone Adhesive Technology (2012 Ronggui Science and Technology Project)

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