Vasu International

U-Tube Manometer-
Range: -150 +150MMWC

Body: Acrylic

Tube: Borosilicate
Type: Analog

Back Sheet: Metal
Without Mercury 

CO2 gas purity tester specifications vary by model, but key parameters include measuring range (e.g., 0-100% or 98-100%), measurement principle (often non-dispersive infrared or absorption), accuracy (e.g., +/- 0.1% of full scale), response time (e.g., < 10 seconds), operating temperature and humidity, calibration requirements

McLeod gauge amplifies the low pressure and was developed to extend the range of vacuum measurement significantly.
The McLeod Gauge measures the vacuum pressure in the range between 10^-1 and 10^-5 torr. This can be used as a primary standard device for calibrating other low-pressure gauges.