Important! Calibration Gas can not be returned or refunded. Please ensure this exactly
what you need before placing your online order. Please call (800)
895-4916 if you are not sure or have any questions.
**Please Note! Items pictured may not be exactly what you will receive but will be similar in form and function. $19.95 Hazardous Materials Shipping Charge (MINIMUM) additional for Calibration Gas & Kits (Automatically added to shipping charges)**