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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)**
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