Tea bag testing
2026-07-17Tea bag testing per GB/T 24690 (sensory, moisture, water extract) and GB 4806.8 (filter bag fluorescent substances, migration, heavy metals, wet tensile). Beijing ZKGX lab.
Proximity switch testing
2026-07-16Proximity switch testing per GB/T 14048.10-2016 (IEC 60947-5-2): Sn/Sr/Su/Sa sensing distance, repeat accuracy ≤3%, hysteresis, switching frequency. Beijing ZKGX.
Luminaire safety testing
2026-07-16Luminaire testing per GB 7000.1-2015 (safety, = IEC 60598-1), GB/T 31897 (LED performance, Ra≥80), GB 17743 (EMC), GB/T 20145 (blue light). Beijing ZKGX lab.
Electric drill testing
2026-07-09Electric drill testing per IEC 62841 / GB/T 3883.201 — torque and no-load speed, temperature rise under drilling duty, hand-arm vibration, noise, and EMC type test.
Gypsum board testing
2026-07-08Gypsum board testing per GB/T 9775-2025 / ASTM C473 — breaking load (longitudinal/transverse), tapered edge, facer bond, water absorption (≤10%), humid deflection, and fire.
Submersible pump testing
2026-07-08Submersible pump testing per ISO 9906 / GB/T 3216 — flow, head, wire-to-water efficiency, NPSH, and the motor-integrity tests (insulation, leakage, thermal) per ANSI/HI 11.6.
Check valve testing
2026-07-08Check valve testing per ISO 5208 / API 598 / API 6D — shell and reverse-seat tightness, cracking pressure, closing response and water-hammer, flow coefficient (Cv).
Circuit breaker testing
2026-07-08Circuit breaker type testing to IEC 60947-2 / GB/T 14048.2 — Icu, Ics, Icw, Icm, utilization category A/B, test sequences, and Annex F EMC for electronic releases.
Fuse testing
2026-07-06Fuse type testing to IEC 60269-1 / GB/T 13539.1 — breaking capacity (I₁/I₂/I₃), time-current gates, I²t, power dissipation, and HV fuses per IEC 60282-1
Phenolic resin testing
2026-07-06Phenolic resin testing per EN ISO 10082 — novolac vs resol, gel time (ISO 9396), free formaldehyde (ISO 9397), hexamine (ISO 8988), DSC cure (ISO 11409).
Dishwasher testing
2026-07-06Dishwasher testing verifies cleaning, drying, energy, water and noise to IEC 60436 (ed. 5.0), AHAM DW-2-2020 and EU Ecodesign 2019/2022 (EEI < 56). Tested by Beijing ZKGX Research.
Vacuum cleaner testing
2026-07-06Vacuum cleaner testing verifies dust pick-up, air performance, filtration, energy, noise and battery run-time to IEC 62885, ASTM F-series and EU Ecodesign 666/2013. Tested by Beijing ZKGX Research.
Canned food testing
2026-07-04Canned food testing to GB 7098-2025 (implementing 2026-03-16): commercial sterility (GB 4789.26-2023, not bacterial count), tin migration from the can, histamine in fish cans — Beijing ZKGX.
Corduroy Testing
2026-07-03Corduroy testing as a two-layer structure: product standards (GB/T 14311-2017 printed/dyed, FZ/T 13061-2024 grey, FZ/T 81019 garments) + GB 18401-2010 safety baseline, with wale-specific pile-retention and seam-slippage tests — Beijing ZKGX.
Legionella testing
2026-07-03Legionella testing: GB/T 18204.5 and GB/T 40392-2021 (BCYE/GVPC culture, L-cysteine differential confirmation) for cooling-tower and HVAC water against WS 10013-2023 action levels — Beijing ZKGX.
Gibberellin testing
2026-07-03Gibberellin (gibberellic acid GA₃) testing: GB 23200.21-2016 (LC-MS/MS method for fruits) against GB 2763-2026 crop-specific MRLs. The endogenous-plant-hormone background problem — not zero-tolerance — Beijing ZKGX.
Lysine testing
2026-07-03Lysine testing by matrix: food (GB 5009.124-2016 amino-acid analyzer after acid hydrolysis), feed (GB/T 18246-2019, total vs free lysine), and feed additive L-Lys HCl (GB 34466-2017, ≥98.5%) — Beijing ZKGX.
Phthalate plasticizer testing
2026-07-03Phthalate plasticizer testing by matrix: food-contact materials (GB 31604.30-2025, 19 PAEs, just replacing 2016), food (GB 5009.271-2016), GB 9685 SML limits, RoHS (GB 26572-2025) — GC-MS — Beijing ZKGX.
Total Fungal Count Testing
2026-07-03Total fungal count (mould + yeast) testing: GB 4789.15-2016 (2 methods — Rose Bengal pour-plate for all foods; Howard direct-microscope for tomato paste), plus cosmetics & GB 15979 — Beijing ZKGX.
Alfalfa testing
2026-07-03Alfalfa testing as a three-product-class framework: GB/T 2930 series (seed), NY/T 1459 (hay/meal quality grading by crude protein/fiber/ash), and GB 13078-2017 feed hygiene (aflatoxin, Salmonella) — Beijing ZKGX.
Total beta radioactivity testing
2026-07-03Total beta radioactivity testing: GB 5749-2022 (drinking water, total β ≤1 Bq/L after ⁴⁰K deduction, effective 2023-04-01) and GB 14883.1-2016 (food), with the screening-to-nuclide logic — Beijing ZKGX.
Compressed candy testing
2026-07-02Compressed candy (压片糖果) testing to SB/T 10347-2017 (product standard) and GB 17399-2016 (confectionery safety) — distinct from hard candy (SB/T 10018) and health-food tablets — Beijing ZKGX.
Air-conditioning and ventilation (HVAC) system testing
2026-07-02HVAC system testing as a four-standard chain: GB 50736-2012 (design) → GB/T 14294 (AHU) → GB 50243-2016 (acceptance) → GB/T 18883-2022 (IAQ, added PM2.5) — Beijing ZKGX.
Air cooler testing
2026-07-02Evaporative air cooler testing as a four-standard stack: GB/T 23333-2024 (product, replacing 2009), new GB/T 4706.115-2024 safety (impl 2026-08-01), QB/T 4977 efficiency, GB 4343 EMC — Beijing ZKGX.
Electrical fast transient/burst immunity testing
2026-07-02Electrical fast transient/burst immunity testing to GB/T 17626.4-2018 (IDT IEC 61000-4-4:2012): the 5/50 ns / 5 kHz waveform, 0.5–4 kV test levels, CDN vs capacitive clamp coupling — Beijing ZKGX.
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