The 81/82CP Series is ideal for demanding Air Conditioning and Refrigeration applications where long-term reliability and accuracy is a must. This series provides proven reliability at a competitive price. The 81/82CP Series is compatible with a variety of refrigerants, including R410a, R12, R22, R134a, R404a, R407c, R410a, R502, R507, Propane (R290) and A2L (R32, R454A, R454B, R454C). Please reach out for other refrigerant options.