High-Precision Digital Salinity Meters & Seawater Salinity Analyzers

As a premier ISO-certified B2B manufacturer of electrochemical instruments, Hangzhou Qiwei Instrument Co., Ltd. produces commercial-grade Salinity Meters (Salinity Analyzers) engineered for aquaculture farming, food processing, seawater desalination, and environmental marine research.

Equipped with advanced PSS-78 practical salinity algorithms, microcomputer processing circuits, and Automatic Temperature Compensation (ATC), our salinity meters deliver rapid, highly accurate, and stable salinity, TDS, and electrical conductivity readouts.

Get Bulk Wholesale Quote Download Salinity Meter Specification

Pen-Type Salinity Meter
Model: YD-1H (High range), YD-1L (Low range)
Measuring range: 0~9999 mg/L, 0~2500 mg/L
Accuracy: ±2 mg/L
Resolution: 1 mg/L
Pen Salinity Meter
Model: YD-300 (high range)
Measuring range: 300 g/L
Resolution: 0.1 g/L
Precision: ±0.2 g/L
Salinity Pen
Model: YD-100 (low range)
Measuring range: 100 g/L
Resolution: 0.1 g/L
Precision: ±0.2 g/L

Explore Our Salinity Testing Instrument Series

Versatile salinity testing options designed for portable field inspection, precision benchtop laboratory analysis, and continuous industrial monitoring.

1. Laboratory Benchtop Salinity Meters

High-accuracy benchtop instruments featuring large backlit LCD displays, PSS-78 seawater algorithms, and USB data transmission for certified R&D food and marine laboratories.

Salinity Range: 0.00 to 80.0 ppt (0.1% to 10% NaCl)
Automatic Temperature Compensation (ATC)
GLP compliant memory for up to 1000 data sets

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2. Portable Field Salinity Testers

Rugged handheld meters packaged in waterproof field cases with platinum conductivity/salinity probes for rapid on-site salinity verification in fish farms, shrimp ponds, and estuaries.

IP65 waterproof housing with rechargeable battery
Quick-connect probe inputs for field operations
Direct display of ppt, PSU, and specific gravity

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3. Online Industrial Salinity Process Controllers

Continuous 24/7 online salinity sensors and industrial transmitters designed for automated aquaculture water conditioning, seawater desalination plants, and brine processing pipelines.

4-20mA / RS485 Modbus PLC integration
Relay control output for automated freshwater/salt dosing
Corrosion-resistant IP68 industrial immersion body

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Critical Industrial Applications & Engineering Strengths

Why Salinity Monitoring is Vital

Salinity measures the total concentration of dissolved salts in water, serving as a critical parameter for biological health and industrial compliance. Key applications include:

Aquaculture & Marine Hatcheries: Maintaining precise salinity levels for fish, shrimp, and shellfish survival and growth
Food & Beverage Processing: Quality control of salt concentration in brines, sauces, canned goods, and dairy production
Seawater Desalination: Monitoring feed water and product water salt rejection efficiency in RO plants
Environmental Estuary Monitoring: Assessing saltwater intrusion and marine ecological balance

Qiwei Manufacturing & OEM Advantages

Supporting global electrochemical instrument distributors, system integrators, and brand owners:

Standard Seawater & NaCl Curves: Built-in PSS-78 practical salinity scale and standard sodium chloride conversion tables
Advanced Temperature Compensation: Precise linear and non-linear ATC coefficients to prevent temperature-induced errors
OEM & ODM Customization: Logo branding, custom housing colors, and localized language software UI
Internal Links: Combine with our Electrochemical Instruments, pH Meters, and Spectrophotometers for complete water analysis.

Frequently Asked Questions (Salinity Meter Sourcing Guide)

Q1: How does a digital salinity meter calculate salt concentration?

Modern digital salinity meters measure the electrical conductivity (EC) and temperature of the liquid, and then apply internationally recognized conversion formulas—such as the Practical Salinity Scale (PSS-78) for seawater or standard NaCl calibration tables—to compute and display salinity in parts per thousand (ppt) or percentage (%).

Q2: What is the difference between seawater salinity (ppt) and NaCl salinity (%)?

Seawater salinity is measured in practical salinity units (PSU or ppt) based on the complex ionic composition of natural ocean water. NaCl salinity percentage (%) measures pure sodium chloride content commonly used in food processing, brining, and pickling applications. Qiwei meters support switching between both calculation modes.

Q3: Do you support OEM custom branding and wholesale distributor pricing?

Yes, as a factory-direct manufacturer, we offer complete OEM/ODM custom branding, customized UI interfaces, private label packaging, and tiered volume discounts for global laboratory suppliers.

Require Factory Direct Pricing or Custom Salinity Testing Equipment?

Get in touch with Hangzhou Qiwei Instrument today for technical consultation, probe options, and competitive distributor pricing within 24 hours.

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Hangzhou Qiwei Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of salinity meter in China, featured by quality products and good service. Please rest assured to buy bulk durable salinity meter in stock here from our factory. We also accept customized orders.

salinity meter, Salinity Pen