Accurate results rely on careful calibration and temperature alignment: ensure the prism and the sample are at the same temperature during measurement for reliable, repeatable readings. Protect the instrument from moisture: do not operate in damp conditions or immerse the instrument in water. If the instrument becomes foggy, water has entered the body. Contact a qualified service technician or your dealer to inspect and service. Do not measure abrasive or corrosive chemicals with this instrument: they can damage the prism coating and affect accuracy. For harsh samples, use appropriate alternatives or consult support. Clean the instrument between measurements: wipe with a soft, damp cloth to maintain performance. Regular cleaning prevents buildup, preserves the prism coating, and helps retain measurement accuracy. Use scenarios Laboratory quality control: verify consistency of liquid samples with precise calibration and temperature control. Research and development: perform accurate optical measurements of clear liquids or solvents where precision matters. Online manufacturing QC: spotcheck products during production to ensure uniform optical properties.