Specialty Chemicals Testing
2026-08-25Specialty chemicals testing verifies identity, purity, trace impurities, and functional performance across liquids, powders, and formulations. The workflow spans representative sampling, controlled pretreatment, HPLC and GC-MS assay and impurity prof
Lubricants & Greases Testing
2026-08-22Lubricants and greases testing involves systematic sampling, standardized physical/chemical analyses, and comparison to performance specifications. Key methods include viscosity measurement, elemental spectroscopy, FTIR, and chromatography. Results d
Petrochemicals Testing
2026-08-21Petrochemicals testing verifies the composition and physical behavior of hydrocarbon streams and finished petrochemical products. It combines GC-MS and HPLC for identification and quantification of components and impurities, physical methods such as
Beauty & Personal Care Testing
2026-08-20Beauty and personal care testing verifies safety, quality and label claims across creams, shampoos, makeup and other products. Core methods include ICP-MS heavy metal analysis, in vitro toxicology assays, plate counts and PCR for microbial detection,
Basic & Industrial Chemicals Testing
2026-08-18Basic & Industrial Chemicals Testing verifies the identity, purity, and physicochemical properties of acids, alkalis, salts, solvents, and intermediates using GC-MS, HPLC, ion chromatography, titration, Karl Fischer, and related techniques. Sampling,
Facial Mask Testing
2026-07-21Facial mask testing verifies microbiology, heavy metals, preservative efficacy, and claims per ISO 17516, ISO 11930, QB/T 2872, and EU 1223/2009. Beijing ZKGX explains.
Palm oil testing
2026-07-17Palm oil testing per GB/T 15680: DOBI (A446/A269), 3-MCPD esters (GB 5009.191-2024, palm oil highest), FFA, IV, slip melting point, fractionation products. Beijing ZKGX lab.
Anti-Static Coating Testing
2026-07-13Anti-static coating testing per GB/T 16906 and HG/T 4570: conductive <10⁶ Ω, dissipative 10⁶-10⁹ Ω, static decay 5000→500 V ≤2s, friction ≤100 V. Beijing ZKGX.
Alkylphenol ethoxylates (APEO) testing
2026-07-13APEO testing per GB/T 23322-2018: NP, OP, NPEO, OPEO by LC-MS/MS. Food contact NP migration under GB 31604.50, 0.003 mg/kg LOD. REACH 100 mg/kg. Beijing ZKGX.
Hull paint testing
2026-07-13Hull paint testing per GB/T 6822-2024: shallow-sea immersion (GB/T 5370), copper release rate, adhesion, cathodic disbondment, VOC compliance. Beijing ZKGX lab.
Coconut Oil Testing
2026-07-13Coconut oil testing per NY/T 230: iodine value 7-12.5, saponification 248-265, lauric acid 45-52%, full fatty acid profile by GB 5009.168. Beijing ZKGX.
Anti-corrosion Coating Testing
2026-07-09Anti-corrosion coating testing per ISO 12944 — salt spray (ISO 9227), cyclic corrosion (Part 6), offshore (Part 9), cathodic disbondment (ISO 15711), mapped to C1–CX and L/M/H/VH.
Hexavalent chromium (Cr(VI)) testing
2026-07-03Hexavalent chromium Cr(VI) testing: GB 30981.2-2025 (coatings, new 8 mg/kg limit) and GB 26572-2025 (RoHS, ≤1000 mg/kg, expanded to 10 substances) — speciation-specific, not total chromium — Beijing ZKGX.
medical ultrasound coupling gel testing
2026-06-25Medical ultrasound coupling gel testing per YY 0299: acoustic impedance 1.5 MRayl, speed of sound 1540 m/s, attenuation, viscosity, pH, microbial, biocompatibility ISO 10993. CMA/CNAS.
Silica Testing per OSHA ID-142
2026-06-24Silica testing per OSHA ID-142 / NIOSH 7500 / GBZ 2.1: RCS quartz cristobalite tridymite, 50 ug/m3 PEL, XRD FTIR, 8-jurisdiction limits, cyclone 2.7 L/min. CMA/CNAS.
Cellulose Ether Testing: MC, HPMC, CMC per GB 1886 & USP
2026-06-24Cellulose ether testing (MC E461 / HPMC E464 / CMC E466): GB 1886.109 + USP monograph + Zeisel HI-GC methoxyl, viscosity 80-120%, thermal gel, AOAC 991.43. CMA/CNAS.
Melatonin Testing USP Monograph & GB/T 5009.170
2026-06-23Melatonin testing per USP monograph / GB/T 5009.170: HPLC assay 98.5-101.5%, 5-MT impurity, dissolution 75%, forced degradation, SAMR filing. CMA/CNAS lab.
Low-borosilicate glass testing
2026-06-22Low-borosilicate glass testing under ISO 3585, ASTM E438, ISO 719/720 grain hydrolytic resistance (HGB classes), USP <660> Type I/II/III surface glass test at 98.5°C, the YBB pharmaceutical framework (low-borosilicate as a recognised category), thermal ex
Cosmetics testing
2026-06-22Cosmetics testing under EU Regulation 1223/2009, U.S. MoCRA, China CSAR (Order 727) and the Safety and Technical Standards (2015), and Japan PMDA — microbiological limits (500/1000 CFU/g), heavy metals by ICP-MS (Pb 10, As 2, Hg 1, Cd 5 mg/kg), the ISO 11
Fire-resistant coating testing
2026-06-08What Is Fire-Resistant Coating Testing and Why It MattersFire-resistant coating testing verifies tha
Insulating Oil Testing
2026-06-08What Is Insulating Oil Testing and Why Does It MatterInsulating oil testing is the systematic analys
Sealant Testing
2026-06-08What Is Sealant Testing and Why Does It MatterSealant testing is the systematic evaluation of sealan
Feed Additive Testing
2026-06-06What Is Feed Additive Testing and Why Does It Matter?Feed additive testing is the systematic evaluat
Rust preventive oil testing
2026-06-04What Is Rust Preventive Oil Testing and Why Does It MatterRust preventive oil testing is the systema
Cutting fluid testing
2026-06-02Cutting fluid testing is the systematic analysis of metalworking fluids (MWFs) used in machining, gr
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