TSI Alnor 8938 CO and CO2 Calibration kit

TSI Alnor 8938 CO and CO2 Calibration kit - 35 ppm CO gas with 1000 ppm CO2 gas, 0 ppm gas (air). Product made in USA and comes with NIST Certificate of Calibration. UPS considers all pressurized tanks and some other products as hazardous materials, and adds $32.50 fee for shipping them. Please note the $32.50 HAZ MAT fee has been added to the price of this product.