Frequently Asked Questions

Every unit ships with original factory serial number, manufacturer warranty registration, and traceable calibration certificate. We support official brand verification via serial number check before payment balance.

We are an official instrumentation integrator and authorized supplier for AZ Instruments, HORIBA, LANDTEK, CHNSPEC, SCIENTZ, TES, HANNA and METTLER TOLEDO product lines, covering environmental testing, analytical lab and process analysis.

Yes. AZ87799, AZ8836x Bluetooth loggers etc. include factory calibration certificates; NIST-traceable or ISO/IEC 17025 accredited third-party calibration reports are available on request.

For cold chain we recommend AZ88165 (ultra-low temperature USB logger, PDF auto-report) or AZ88361 Bluetooth dual-channel logger with ±0.3°C accuracy. Both generate PDF reports without software — ideal for pharma GDP compliance.

Yes, our engineers provide free selection support: e.g., HVAC — AZ8723/AZ7755 (CO2+RH+temp); aquaculture — AZ86032/8403 (DO+pH+salinity); lab color — CHNSPEC TS8503/DS series; water plant — HANNA HI83399 (COD). Share your parameters for a one-page spec match.

Standard warranty: 12–24 months depending on brand (HORIBA/METTLER TOLEDO per official policy). We provide China factory repair channel, spare probes/sensors (pH, DO, EC), and lifetime technical support via email/phone.

Yes, we support government/lab tender bundling: multi-brand instrument packages with unified quotation, training, and commissioning. Custom OEM private-label instruments are available for AZ-compatible models at 500+ pcs.

Stocked AZ/TES/CHNSPEC models ship in 3–7 days; HORIBA/METTLER TOLEDO systems in 4–8 weeks. We export to 30+ countries with full export documentation, CE/ISO compliance, and DDP/DAP shipping terms.

AZ Bluetooth PDF loggers offer comparable ±0.3°C accuracy to premium European brands at roughly 40–60% lower cost, with free app (Android/iOS) and no software-subscription fees. Contact us for a volume price list.

Gerteise supplies multi-brand measurement instruments, including AZ Instrument products, for temperature, humidity, HVAC, laboratory, and environmental monitoring applications.

HVAC commissioning and cleanroom monitoring may require anemometers, differential pressure meters, temperature and humidity meters, and data loggers, depending on measurement requirements.

A colorimeter is commonly used for routine color checks and comparisons when its measurement method suits the sample. A spectrophotometer measures spectral information and may be more suitable for detailed color analysis, tighter matching requirements, or broader quality-control workflows. The right choice depends on the material, required data, tolerance, and measurement conditions.

For plastic parts with a suitable flat measurement area, a portable colorimeter or spectrophotometer may be appropriate. Irregular shapes, small parts, translucent samples, and pellets may require different measurement geometries, sample preparation, or accessories. Confirm the sample type and measurement area before choosing a model.

Portable instruments are convenient for incoming inspection, production-floor checks, and supplier visits. Benchtop instruments may be preferable when samples can be prepared consistently and the workflow requires a fixed measurement setup. Compare sample size, measurement geometry, throughput, and data requirements.

Some CHNSpec models integrate color and gloss measurement, while other instruments focus on one measurement task. Confirm the exact model, measurement geometry, supported gloss angles, and required data before assuming one device can replace two instruments.

Metallic and special-effect coatings can look different depending on viewing and illumination angles. A multi-angle spectrophotometer may be needed when the visual effect must be characterized across angles. Confirm the coating type and customer acceptance method first.