Check the listing for details. LQ32T Handheld Refractometer Cutting Fluid & Coolant Concentration Tester New. Color: Cutting Fluid Gauge 0-32% (Aluminum Core), Condition: New, Made in China. Listed at 43.66 USD. Model: LQ32T. 1 x Pipette. Monitoring water-soluble cutting oil and coolant concentration in CNC machining. Minimum Scale (Resolution): 0.2%. Optical System: High-Definition Prism. Technical Specifications.