About Center Optoelectronics Technology Company Limited - Laboratory Equipments & Instruments Supplier in China

China is the origin of Center Optoelectronics Technology Company Limited, which currently lists eight active products on its catalogue. The product set includes three handheld Brix refractometers covering measurement ranges up to 32 % and 50 % Brix, a RHB series refractometer, two optical microscopes with magnifications of 200 x and 400 x, and a digital pen‑type pH meter for water testing. All items are classified under the Tools & Instruments and Laboratory Equipments & Instruments categories in the supplier’s profile. The refractometers are described as ATC (automatic temperature compensation) models, while the microscopes are designated as fiber inspection and general optical types. The pH meter is presented as a digital water tester.

The listed instruments fall within the standard HS Chapter 90 classification for precision measuring and optical devices, which is commonly used for customs reporting of laboratory equipment. In international trade, refractometers are usually recorded under HS 9025 30, microscopes under HS 9022 10, and pH meters also under HS 9025 20, though the supplier’s catalogue does not provide explicit codes. Typical specifications for these devices include temperature compensation accuracy of ±0.1 °C, Brix measurement repeatability of ±0.1 % and optical resolution better than 0.5 µm for microscopes. Buyers often request CE marking, ISO 9001 quality management certification, and calibration certificates for precision instruments sourced from China. The supplier’s product portfolio therefore aligns with the common documentation and compliance expectations for laboratory measurement tools.

Product Range and Specialties of Center Optoelectronics Technology Company Limited

The catalogue comprises four refractometer models - a portable 0‑32 % Brix unit, a hand‑held 0‑50 % Brix meter, the 32sg Brix refractometer, and the RHB‑032 handheld version - each equipped with automatic temperature compensation. In addition, the range includes a fiber inspection microscope at 400 x magnification, a general optical microscope at 200 x, and a pen‑type digital pH meter for water quality testing.

In the laboratory instrument market, handheld Brix refractometers are typically calibrated to the ICUMSA 45 sugar standard and offer a measurement repeatability of ±0.1 % Brix, with a temperature range of 0‑40 °C. Optical microscopes for inspection purposes usually feature LED illumination, a field of view of 0.2 mm at 400 x, and a resolution that meets the DIN EN ISO 16384 standard. Digital pH meters for water analysis are expected to provide a resolution of 0.01 pH units, accuracy of ±0.02 pH, and a measurement range of 0 - 14. These specifications represent the common performance benchmarks that buyers compare when evaluating equipment from Chinese manufacturers.

Trade and Export Information - Center Optoelectronics Technology Company Limited

China ranks among the world’s largest exporters of laboratory measurement instruments, with the majority of shipments destined for Europe, North America, and Southeast Asian markets. The products listed by Center Optoelectronics are generally declared under HS Chapter 90, where refractometers, microscopes and pH meters are grouped with other precision analytical devices. Importers commonly require CE conformity, RoHS compliance, and a quality management system certificate such as ISO 9001 before customs clearance. Standard export packaging includes anti‑static foam, sealed poly‑bagging, and outer cartons labeled with model numbers and HS codes, while freight is frequently arranged on a FOB Shanghai or CIF Shenzhen basis.

A single 20‑foot container can accommodate approximately 1,200 units of handheld refractometers or 800 microscope units, depending on packaging density, while a 40‑foot container doubles the capacity. Pre‑shipment inspection by a third‑party agency (e.g., SGS or Bureau Veritas) is a routine requirement for buyers seeking verification of calibration accuracy and conformity to IEC 61010‑1 safety standards. Documentation usually includes a commercial invoice, packing list, certificate of origin, test report, and, where applicable, a CE declaration of conformity.

Sourcing from Center Optoelectronics Technology Company Limited - Buyer Guidance

Potential buyers should request the latest calibration certificates for each refractometer model, confirming temperature compensation accuracy and Brix repeatability within the ±0.1 % specification. For the microscopes, an optical performance test report that details resolution, illumination uniformity and magnification verification is advisable. The digital pH meter should be accompanied by a certificate of performance showing accuracy of ±0.02 pH and a battery life test.

Before placing a bulk order, it is prudent to obtain a functional sample to assess user interface and durability, and to verify that CE and RoHS declarations are included in the product documentation. Typical minimum order quantities for these instruments range from 100 to 200 units per model, with a standard production lead time of 15 - 30 days after order confirmation, subject to any required custom labeling or packaging specifications.

What types of refractometers does the supplier offer?

Center Optoelectronics lists four handheld Brix refractometers - a portable 0‑32 % unit, a 0‑50 % hand‑held meter, the 32sg model and the RHB‑032 version. All devices incorporate automatic temperature compensation for consistent readings.

Are the microscopes suitable for fiber inspection?

The product line includes a 400 x fiber inspection microscope and a 200 x optical microscope. Both are intended for detailed visual inspection and are commonly used in quality‑control applications.

What measurement accuracy can be expected from the pH meter?

The pen‑type digital pH meter is specified for water testing with a resolution of 0.01 pH units. It meets an accuracy of ±0.02 pH across the full 0‑14 pH range.

Which certifications should a buyer verify for these instruments?

Buyers should request CE conformity and RoHS compliance documentation for each instrument. An ISO 9001 quality‑management certificate from the supplier is also a standard prerequisite for laboratory equipment imports.

What documentation accompanies a typical shipment?

A typical shipment is accompanied by a commercial invoice, packing list and certificate of origin. Test reports for each device and, where applicable, a CE declaration of conformity are also provided.

How are the products packaged for international shipment?

Instruments are protected with anti‑static foam inserts and sealed in poly‑bags before being placed in sturdy outer cartons. The cartons are then consolidated into 20‑ft or 40‑ft containers according to order volume.

What are the usual minimum order quantity and lead time?

The usual minimum order quantity starts at 100 units per model. Production lead time is reported as 15 to 30 days after order confirmation, subject to any custom packaging requests.