1, complete instrument
Quanzheng is also the first enterprise to introduce formaldehyde detector to match phenol reagent, which greatly increases the accuracy and stability of detection; The detector consists of imported silicon light source, square colorimetric container, imported sensor developed and designed by Silicon Valley in the United States, 3S cloud computing microprocessor, winter temperature compensation system and built-in hyperbolic detection system, which can directly display the formaldehyde content in the tested sample.
2. International Scan 4 160
The instrument has a built-in sampling pump powered by battery. The detection element is an electrochemical sensor with high sensitivity, high stability and high accuracy. The sensor has stable linearity and accurate results. The patented high-precision electrochemical sensor has the advantages of short response time, continuous pumping sampling, small volume, light weight, simple operation and high price.
3. Chittagong Little Swan
Chittagong cygnet detector consists of a host, a sample pretreatment device and a reagent kit, which are packed in a whole box. The instrument is small in size, light in weight and convenient to operate, and is suitable for field and laboratory use. ? Solid-state light-emitting devices also serve as light source and monochromator, and the light source/monochromator, colorimetric tank and sensor are integrated without moving parts.
4、PPM-400ST
The instrument adopts imported chips, cloud computing microprocessors and laboratory-specific phenol reagents, which has the advantages of high precision, high stability and repeatability. In addition to accuracy, the instrument also has a very professional appearance as a laboratory instrument. At the same time, the instrument also has temperature, humidity and electricity display. Large-capacity lithium battery ensures battery life, and the products with the same configuration are cost-effective.
5. Taiyikang
The instrument has a built-in working curve, and the rapid quantitative determination of samples can be realized only by zero correction with matching reagents without configuring standard solution. The color development and measurement of the sample are in the same closed container (cylindrical), and there is no need to transfer, which improves the detection accuracy. Simple operation and convenient use.
Selection skills of formaldehyde detector;
1, look at the sensor
Formaldehyde detector usually adopts electrochemical sensor method, which has been proved by authoritative organizations at home and abroad. Observe the sensor type through the air inlet of the detector. Secondly, you can consult the sensor type of the merchant. If it is a semiconductor, it cannot be directly considered. If you buy it, you can't measure formaldehyde. Looking at the price, hundreds of formaldehyde detectors must use the semiconductor detection principle and can be directly ignored.
2, look at the accuracy
According to the national standard GB\T 18883-2002 Indoor Air Quality Standard, the formaldehyde concentration is accurate to two decimal places, that is, to 0.0 1mg/m3. The products of regular manufacturers are designed in strict accordance with national standards.