Flocculator Jar Test Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-RE-2225
Jlab Export is a leading Flocculator Jar Test Apparatus Manufacturer,and suppliers in India
Raw water samples are stirred side by side in this jar test apparatus to find the coagulant dose that gives the clearest water after settling. Stainless steel paddles turn at the same speed in every jar, and the speed and time show on a digital display. Models take two, four or six jars, and built-in lighting makes the floc easy to watch.
Specifications
| Jars | 2, 4 or 6 |
| Paddles | Stainless steel, all turning at one speed |
| Paddle speed | Variable from 25 rpm, shown on the digital display |
| Timer | Counts down up to 99 minutes, stops the paddles with an alert, then counts up for settling time |
| Programs | 2 preset programs, stored and recalled from memory |
| Keypad | Flat touch-sensitive keypad |
| Display | LED |
| Lighting | Built-in illumination |
| Power | 230 V, 50 Hz, 100 W |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Jar Test Practical in Environmental Engineering
Civil and environmental engineering students fill each jar with the same raw water and add rising doses of Aluminium Sulphate solution. A short fast mix spreads the coagulant, a longer slow mix lets the floc grow, and then the paddles stop for settling. Students draw a sample from each jar and read its turbidity on a Digital Turbidity Meter.
Plotting residual turbidity against dose shows the optimum, the lowest dose that gives clear water. Checking each jar with a Digital pH and mV Meter shows how alum lowers the pH, and a repeat run with Potash Alum lets the class compare coagulants.
Frequently Asked Questions
How is the optimum coagulant dose found?
Run several jars of the same water with increasing doses and identical mixing and settling. The jar with clear water at the lowest dose shows the optimum. Higher doses add cost and sludge without improving clarity, and an overdose can leave the water cloudier.
What are the two preset programs for?
Each program stores a speed and time setting in memory, so a routine test starts with one key. Many labs keep one for the fast mix and one for the slow mix. The settings can be recalled or changed at any time.
How does the timer measure settling time?
Set the countdown for the mixing stage, up to 99 minutes. When it ends, the paddles stop and an alert sounds. The timer then counts up in minutes, so you can read how long the floc has been settling before you take samples.
How many jars do I need?
Six jars let you test six doses, or five doses and an untreated control, in one run. The two and four-jar models suit small classes or a quick check of a dose already known. On every model all the jars turn at one speed.
What mistakes spoil a student jar test?
Adding the coagulant to the jars at different times, using unequal water volumes and running the slow mix too fast, which breaks up the floc, are the common faults. Draw samples from the same depth in each jar without stirring up the settled sludge.
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Last updated: 6 November 2026
