Environmental monitoring
Jar Test Apparatus
A bank of four to six paddle stirrers that mix identical water samples in beakers with different doses of coagulant, so the analyst can find the dose that gives the best floc formation and settling.
- Drinking water utilities
- Municipal and industrial wastewater treatment
- Chemical suppliers (coagulant trials)
- Paper, textile and mining industries
- Universities and training
PREVENTIVE MAINTENANCE
Maintenance checklist
Each use
- Rinse paddles and jars with tap water and then purified water
- Wipe the frame and illuminated base
Monthly
- Check paddles are straight and at equal heights
- Check all paddles turn at the same speed visually
Six-monthly / annual
- Paddle speed check with a calibrated tachometer
- Inspect drive belts or gears for wear
- Timer check
SAFETY
Safety precautions
Before you work on the Jar tester
- Coagulant solutions (alum, ferric chloride) are irritant or corrosive: wear gloves and eye protection.
- Keep hands and loose clothing away from turning paddles.
- Keep electrical parts dry; wipe spills promptly.
- Treat raw wastewater as potentially infectious.
In LimsPulse · Calibration Management
Keep every Jar tester in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.