Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of portable nitrite meter in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk portable nitrite meter in stock here from our factory. We also accept customized orders.
product key technologies

Product Overview
The Portable Nitrite Meter is a handheld, battery-operated device designed for on-site measurement of nitrite concentration. It is lightweight and portable, suitable for use at water treatment plants, industrial facilities, swimming pools, and food safety inspection sites. The instrument eliminates the need to transport samples back to a laboratory - testing can be performed immediately at the sampling location.
Measurement Principle
The device operates on photoelectric colorimetry. A light beam is directed through a prepared sample, and an optical sensor measures the intensity of transmitted light. Higher nitrite concentration produces darker coloration, resulting in lower light transmission. An internal microprocessor converts the optical reading into a numerical nitrite concentration value. This method eliminates the subjectivity and inconsistency of manual visual color comparison.
Importance Of Nitrite Monitoring
Nitrite is a hazardous substance that poses potential risks to human health and ecological safety. Excessive nitrite content in drinking water, domestic water, or industrial water can lead to health issues. In food products, high nitrite levels violate safety regulations and affect product compliance. Therefore, regular, rapid, and accurate nitrite detection is an essential routine task for water quality supervision and food safety control. This portable analyzer is developed to meet these regulatory and operational needs.
Applicable Scenarios
Drinking water treatment plants (small, medium, and large scale),Industrial facilities and mining operations, Public swimming pools, Food safety testing laboratories and inspection agencies and Field sampling of surface water bodies such as rivers and reservoirs.

Portability Features
Unlike benchtop instruments that are fixed to a laboratory workspace, this analyzer is designed for field mobility. It fits into a carrying case, weighs minimal, and can be operated with one hand. The display is clear, and the control interface is straightforward, allowing field personnel to become proficient within minutes.
Supply and Support Advantages
- Direct factory pricing – no intermediary costs
- 100% quality inspection prior to shipment
- Sufficient inventory for large-volume orders
- Fast delivery lead times
- Professional after-sales service and technical support
Technical Parameter
|
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 |
|
|
Repeatability |
1% |
|
|
Linear Error |
±5% FS |
|
Why choose us?
1. Manufacturer Place your order directly to the factory, no intermediate cost, more fast delivery ,better service and economical cost.
2. Strict QC inspection Good quality is top important during cooperation. We will make QC inspection strictly before ship out to make sure every piece stayed in a good condition. If any problems made by us after you received cases then we will full responsible to compensate you.
3. As a professional manufacturer of water quality analysis instruments, we have sufficient stock capacity to fulfill your order demands steadily.
4. Fast delivery Enough stock in the warehouse.
5. Professional sale team with the best after-service professional and experienced sales team will provide you excellent service.
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