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Product Description


Mastercool’s high precision charging scale accurately measures small cans of refrigerant for charging systems that need a precise charge.

  • Hex cylinder adapter included for easy attachment of refrigerant cylinder to scale
  • Specially designed for R600a and R290
  • Built in check valve will hold any remaining refrigerant within the 36” nylon tube
  • Slim design for easy storage
  • Two button keypad for easy operation
  • Unit change (grams & ounces)
  • One touch tare weighing function
  • Auto zero
  • Auto off automatically turns off its power if the scale is not used within 3 hours


  • Capacity: 176 ounces (5000 grams)
  • Sensitivity: 0.035 ounces (1 grams)
  • Charging Capability: up to 1 gram accuracy
  • Dimensions: 5.5 (w) x 7.3 (l) x 1.6 (h) in. (140 (w) x 185 (l) x 40 (h) mm)
  • Power Source: 3 x AAA 1.5v battery
  • Fitting: 1/4” SAE M flare fitting with check valve

98201: High Precision Charging Scale packaged in a cardboard box
98202: High Precision Charging Scale with storage for a 14 oz. refrigerant cylinder (sold separately) packaged in a custom molded plastic case
98202-600: High Precision Charging Scale packaged in a custom molded plastic case with a can of R600a refrigerant (14.8 oz (420 g))
98202-290: High Precision Charging Scale packaged in a custom molded plastic case with a can of R290 refrigerant (13 oz (370 g))

Also Available:
91050-600-12: R600a Refrigerant Grade Isobutane C4H10 (14.8 oz (420 g) cylinder) packaged 12 per box
91050-290-12: R290 Refrigerant Grade Propane C3H8 (13 oz (370g) cylinder) packaged 12 per box

Available Downloads

PDF_downlaod Instructions
PDF_downlaod Flier


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