A professional manufacture and sales of various electronic balances, moisture analyzers, viscometers and laboratory instrument manufacturer of weight measure instruments..

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W&J Instrument Co., Ltd. specializes in manufacturing analytical balance scale, precision weighing scale, density scale, moisture analyzer, digital viscometer, ph meter and test calibration weights. We have passed certification ISO9001:2008, ISO14001:2004, CE and ROHS.

We have over 20 years of production experience and over 15 years of export sales experience, and more than 2000m2 factory.

Customized M1/M2 Class Chromed Plated Split Test Standard Weights Sets Calibration Weights Company

The main material of the steel chrome-plated weight is 45# steel with chrome-plated surface. The internal material is 45# steel, and the surface is processed by special grinding and electroplating technology, which has high corrosion resistance and wear resistance.

OIML 1kg 2kg 5kg 10kg 20kg 25kg 50kg 100kg 200kg 500kg 1ton Cast Iron Test Weights Grip Handle and Nesting Slab Weights

Cast iron weights are a measuring tool that measures the weight of an object by comparing its mass. It is done by placing a weight on the balance pan while weighing the weight of another object. Cast iron weights usually have precise weight values because they are calibrated on a precision balance. When the balance weighs an object, the weight exerts a certain force on the balance, which in turn affects the balance point of the lever, thereby achieving accurate measurement of the mass of the object. ‌

Customized UV752 190-1100nm UV-visible Spectrophotometer manufacturers From China | W&J

UV752 190-1100nm UV-visible Spectrophotometer compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of UV752 190-1100nm UV-visible Spectrophotometer can be customized according to your needs.Modern intelligent photometer with self-test, self-calibration wavelength, automatic switching and positioning of light source, zero adjustment and wavelength change are all automatic, concentration test, regression equation can be realized.1. Large sample chamber, can accommodate 5-100mm cuvettes of various specifications;2. The unique design of the optical system, high-performance holographic grating and receiver ensure that the instrument has excellent performance indicators;3. Using stand-alone operation, linear regression equation measurement, etc.;4. Apply the la...

Conductivity Meter

Conductivity is a numerical representation of the ability of a solution to conduct electrical current. The conductivity of water has a certain relationship with the amount of inorganic acids, alkalis and salts contained in it. When their concentrations are low, the conductivity increases with the increase of the concentration. Therefore, this indicator is often used to infer the total amount of ions in water. concentration or salt content.

50g 100g Rapid Speedy Moisture Balance Analyzer

The moisture content is calculated by heating the sample to make it lose moisture, and then measuring the weight change of the sample. Specifically, the halogen moisture detector uses a ring-shaped halogen infrared heating source to quickly dry the sample, and measures the weight change of the sample in real time through a weighing sensor to finally determine the moisture content percentage. By injecting inert gas halogen elements, the life of the infrared radiation source is extended and the temperature is made more uniform. Compared with the traditional oven heating method, the halogen heating method is more efficient and the sample surface is not easily damaged.

Touch Screen Display Grain Food Powder Digital Halogen Moisture Meter

Quality CE ROHS UV1600PC English Software 190-1100nm UV/VIS Ultraviolet Visible UV Spectrophotometer Manufacturer | W&J

CE ROHS UV1600PC English Software 190-1100nm UV/VIS Ultraviolet Visible UV Spectrophotometer compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of CE ROHS UV1600PC English Software 190-1100nm UV/VIS Ultraviolet Visible UV Spectrophotometer can be customized according to your needs.UV-1600PC of accurate scanning UV-visible spectrophotometer is a reliable and precise laboratory instruments, capable of photometric measurements, quantitative analysis, qualitative analysis, dynamic analysis, DNA \ RNA, protein testing. High performance, high quality and a variety of practical features have earned a good reputationFunctionl Variable bandwidth, suitable for different samples and different test requirementsl Photometric measurements: sample can be easily measu...

100g 200g 300g 600g 1000g GSM Textile Scales

Accuracy 0.01g and 0.001gCapacity 100g/200g/300g/500g/600g/1000gGSM cutter:Sample Area: 100CM2Sample Diameter: 113mmCutting depth: up to 5 mmDimensions: 17*17*13CMWeight: 2KG4 Piece blades-SetCutting Board

0.01mg electronic analytical balance designed for precision weighing

Electronic analytical balances designed for precision weighing.The CEB series balances achieve an ideal balance between innovation, convenience, and excellent weighing performance, integrating application modes required for daily weighing and testing processes.Product Features: Second-generation electromagnetic force sensor Standard configuration includes 4 common units; custom units are available. RS232 bidirectional interface USB-B communication interface Ultra-white conductive glass, effectively reducing the effects of electrostatic weighing. Customizable 485 protocol Built-in automatic calibration mode; timed calibration possible.

Quality Adhesives Paint Glue Lubricants Colloids Grease Digital Viscometer Brookfield Viscosity Test Meter Viscosimeter

Working principle of digital viscometerDigital viscometers usually use the rotation method to measure viscosity. The instrument controls the rotation of the rotor through a stepper motor. When the rotor rotates in the liquid, it will be subject to the resistance of the liquid. By measuring the rotation speed and resistance of the rotor, the instrument can calculate the viscosity of the liquid and display it on the LCD screen.

Customized Circle GSM Cutter Fabric Sampler manufacturers From China | W&J

Circle GSM Cutter compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of Circle GSM Cutter can be customized according to your needs.GSM Sampler Textile Fabric CutterPurpose:A kind of circular sampler which is used to cut and get sample from various of wool, cotton, fiber, knitting and so on.The fabric sampler is used to cut circular specimens of various geotextiles and geosynthetic composite materials. It uses an all aluminum alloy stamping blade and can also be used in conjunction with an electronic balance to test the unit area mass of geotextiles.

No. 0 1 2 3 4 Spindles mPa.s Test Small Liquid Rotary Viscometer NDJ 8S 5S Accurate Latex Viscosity Meter Viscosimeter

Why Choose Our Laboratory Instruments?

Our core technical team possesses interdisciplinary capabilities in mechanical design, electronic engineering, and software algorithms, enabling us to provide customized development services including special weighing range customization (such as ultra-micro weighing at the 0.01mg level or large weighing ranges above 10kg), explosion-proof certification (ATEX/IECEx Zone 1/2), integration of specific communication protocols (Modbus RTU, Profinet, 4-20mA analog output), and multilingual localization of the human-machine interface.

At the project execution level, we employ a stage-gate management model. Customers can participate in multiple rounds of technical reviews before the design freeze, and the engineering development phase only begins after the functional specification is confirmed, effectively controlling project change risks and delivery uncertainty.

On the manufacturing side, the company boasts a 3,000-square-meter self-owned production line equipped with fully automated calibration and testing benches and aging test chambers. This allows for flexible switching between small-batch trial orders (5-50 units) and large-scale orders, with a minimum order quantity (MOQ) at the lowest level in the industry.

In terms of after-sales service, customized instruments enjoy the same 24-month warranty commitment as standard products, a 10-year spare parts inventory commitment for key components, and value-added services such as on-site installation and commissioning, operation training, and metrological calibration guidance, ensuring customers receive original manufacturer technical support throughout the entire instrument lifecycle.

Precision Analytical Balance

A high-precision electromagnetic force-compensation weighing system delivering 0.1mg readability with automatic internal calibration, designed for quantitative analysis in regulated pharmaceutical, chemical, and research laboratory environments.

Digital Viscometer

A rotational digital viscometer with broad measurement range (10–6,000,000 mPa·s), featuring optional Peltier temperature control and compliant with FDA 21 CFR Part 11 for electronic data integrity in quality control applications.

Moisture Analyzer

A halogen-heated rapid drying moisture analyzer achieving 0.001g reading precision, equipped with an intelligent endpoint detection algorithm that automatically terminates heating upon sample constant-weight confirmation, suitable for high-throughput QC testing across food, chemical, and pharmaceutical sectors.

Calibration Test Weights

OIML R 111-compliant precision test weights available in E1 through M1 accuracy classes, crafted from non-magnetic austenitic stainless steel with mirror-finish surface treatment, traceable to CIPM mutual recognition arrangements for metrological calibration applications.

Our customized services are underpinned by nearly 30 years of independent R&D and manufacturing experience in precision instruments, building a closed-loop capability encompassing the entire process from capturing customer needs, designing conceptual solutions, verifying functional prototypes, to large-scale mass production and delivery.