High-Precision Water Nitrite Testers & Nitrite Nitrogen Analyzers

As an ISO-certified B2B analytical instrument manufacturer, Hangzhou Qiwei Instrument Co., Ltd. produces commercial-grade Nitrite Testers (Nitrite Nitrogen Analyzers) engineered for aquaculture water quality control, drinking water safety, municipal wastewater monitoring, and environmental testing laboratories.

Utilizing standard N-(1-naphthyl)ethylenediamine spectrophotometric methods (Griess reaction), our nitrite photometers provide rapid response times, high optical repeatability, and precise direct readouts (mg/L $NO_2^-$-N) to ensure early detection of toxic nitrogen compounds.

Get Bulk Wholesale Quote Download Nitrite Meter Specification

Portable Nitrite Meter
Model: YXSY-1, YXSY-2
Measuring Range: 0~0.25 mg/L
Power Supply: Power adapter (DC 5V/0.1A), 220V
Resolution: 0.001 mg/L
Desktop Nitrite Colorimeter
Model: YXSY-1, YXSY-2
Measuring Range: 0~0.25 mg/L
Power Supply: Power adapter (DC 5V/0.1A), 220V
Resolution: 0.001 mg/L

Explore Our Nitrite Testing Equipment Series

Versatile nitrite analysis options designed for handheld field compliance inspections and certified analytical laboratory workflows.

1. Portable Field Nitrite Testers

Handheld, waterproof photometers pre-calibrated for rapid on-site nitrite nitrogen verification in fish ponds, shrimp farms, rivers, and discharge outlets.

Measurement Range: 0.00 – 1.00 mg/L $NO_2^-$-N
IP65 waterproof field case with pre-dosed reagents
Single-button zero calibration & fast testing cycle

Get Portable Kit Specs →

2. Benchtop Laboratory Nitrite Analyzers

Precision benchtop spectrophotometric units equipped with high-resolution narrow-band optics, GLP compliant memory storage, and USB data transmission for testing labs.

High optical accuracy & repeatability
Pre-installed Griess reaction calibration curves
Ideal for certified environmental testing labs

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3. Multi-Parameter Nitrogen Analyzers (Nitrite / Ammonia / Nitrate)

Comprehensive photometers combining Nitrite, Ammonia Nitrogen, Nitrate, and COD testing in one portable instrument to streamline complete nutrient management.

All-in-one nitrogen cycle parameter testing
Reduces equipment outlay for plant managers
Customizable testing programs for specialized facilities

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Critical Industrial Applications & Engineering Strengths

Why Water Nitrite Monitoring is Vital

Nitrite ($NO_2^-$) is an intermediate product of nitrogen cycling. High levels are toxic to aquatic life (causing brown blood disease in fish) and pose health risks in drinking water. Key applications include:

Aquaculture & Hatcheries: Daily toxic nitrite monitoring to protect fish and shrimp stocks
Municipal Drinking Water: Compliance monitoring to ensure treated water meets public health standards
Wastewater Treatment Plants: Tracking nitrification and denitrification biological process efficiency
Environmental Surveillance: Routine river and reservoir pollution discharge surveys

Qiwei Manufacturing & OEM Advantages

Supporting global aquaculture suppliers, water testing distributors, and environmental instrument brands:

High-Sensitivity Griess Chemistry: Accurate trace-level detection with excellent color stability and minimal interference

Stable Optical Module: Long-life LED light source eliminates frequent light bulb replacement and warm-up drift

OEM & ODM Customization: Logo printing, custom carrying cases, and localized language software UI

Internal Links: Combine with our Iron Testers, Spectrophotometers, TSS Meters, and Sulfuric Acid Meters for comprehensive water analysis.

Frequently Asked Questions (Nitrite Tester Sourcing Guide)

Q1: What analytical method do Qiwei Nitrite Meters use?

Our nitrite analyzers utilize the standard N-(1-naphthyl)ethylenediamine spectrophotometric method (Griess reaction), producing a distinct pink-magenta azo dye for highly accurate concentration readouts.

Q2: Can high turbidity or suspended solids interfere with nitrite readings?

For turbid samples, we recommend pre-filtering the water sample using standard membrane filters or allowing suspended matter to settle before adding the reagent and zeroing the photometer.

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, and tiered volume discounts for global laboratory and aquaculture suppliers.

Require Factory Direct Pricing or Custom Nitrite Testing Solutions?

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

Inquire Now & Get Quote Talk to Instrument Engineer

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

Desktop Nitrite Colorimeter, nitrite tester, Portable Nitrite Meter