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]- Measuring Instruments
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#03061 PM2.5 detector
This small, portable meter measures the content of PM2.5 dust particles in the air and shows the current concentration of PM2.5 suspended dust on a clear LCD display.
PM2.5 dust contains particles smaller than 2.5 micrometers in diameter. These particles, in addition to penetrating the upper and lower respiratory tract, can also enter the blood. The acceptable average daily concentration for PM2.5 dust is 25 µg / m3.Display LCD,
3 digitsPM2.5 detection 0 ÷ 1000 µg/m3 ± 10% Sampling time 3 s Auto power off yes Power 3,7V 450mAh Lithium battery 
Net Price: 35.60 USD
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#03877 Noyafa NF-272L - Digital distance meter 100m
Device allows to measure distance, height, area and volume. Accurate laser measurements up to 100 meters.Measurement method laser Resolution 0.001m Measurement range 0.05 ÷ 100m ± 0.0015m Measurement unit meters or feet Auto power off yes Power 3.7V built-in battery Dimensions 119x50x26 mm Weight 100g Manufacturer Noyafa 
Net Price: 36.10 USD
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