What precautions should be taken when using a Lovibond color timer？

What precautions should be taken when using a Lovibond color timer？

Here are the key precautions for using a Lovibond colorimeter, integrating operational standards and safety requirements from multiple authoritative sources:

‌1. Environment & Equipment Preparation‌

‌Avoid Strong Light Interference‌:

Place the instrument away from windows or direct sunlight, positioning it against a white/neutral-colored background wall to eliminate external light reflections.

‌Light Source Management‌:

Bulbs have a lifespan of 100 hours and must be replaced in pairs (mismatched bulb ages affect light quality).

Use a voltage stabilizer if power is unstable to prevent light source fluctuations.

‌2. Operational Protocols‌

‌Sample Handling‌:

Liquid samples must be free of bubbles or sedimentation; solid samples should be uniformly ground.

Keep cuvettes/tubes clean to avoid fingerprints or stains on optical surfaces.

‌Calibration & Measurement‌:

Calibrate with blank samples (e.g., distilled water) before measurement.

Use transmission method for transparent samples and reflection method for opaque samples.

‌3. Personnel & Safety‌

‌Eye Protection‌:

Avoid prolonged eye contact with the eyepiece; perform measurements in batches or with multiple verifiers to reduce visual fatigue.

Adjust seating height for comfortable observation.

‌Instrument Maintenance‌:

Regularly clean cuvettes and filters, and replace worn white liners.

‌4. Data Recording & Validation‌

‌Result Comparison‌:

Match against standard color cards or industry standards (e.g., ISO 15305) for color compliance.

‌Anomaly Handling‌:

If deviations occur, inspect the light source, sample uniformity, or recalibrate.

‌Operational details may vary by model (e.g., Model D/E); consult the specific manual for guidance.

ST110 Lovibond colorimeter is a visual colorimeter, it using the international general Lovibond color degrees as the standard, can measure various liquids, colloids, solid and powder of chroma samples. Instrument has the advantages of simple structure, firm, the operation is very convenient, very suitable for cooking oil and other industrial and agricultural products, color measurement, in order to achieve the daily quality control.