Methane cal gas 5200 ppm (in air)* Call us for a quote SKU: 400554 90152 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Related products Plug-in head cable0 out of 5 $81.00 Add to cart Handle for plug in thermocouples0 out of 5 $132.00 Add to cart 16′ probe connection cable0 out of 5 $105.00 Add to cart