Model 1922 Digital Flocculator & Jar Test Apparatus — Precision Coagulation Analysis System
The EI-DVI Model 1922 Digital Flocculator / Jar Test Apparatus is a high-precision multi-spindle benchtop stirring system engineered for critical water quality management, environmental testing, and effluent sample analysis. This dual-sample apparatus accurately simulates full-scale chemical coagulation and sedimentation processes within industrial, academic, and municipal sectors, helping water treatment professionals effectively determine optimal chemical dosing treatments such as alum.
Built for modern lab operational efficiency, the Model 1922 couples advanced digital micro-processing controllers with a totally flat, touch-sensitive keypad for easy cleanup. Dual standalone program memories let lab technicians run automated variable speed sequences between 10 to 300 RPM. Rapid settling evaluations are streamlined via a smart dual-phase timer that alerts upon completion of fast/slow mix countdown cycles before instantly pivoting into an automated count-up tracking sequence to index precise settling properties.
Constructed around a chemical-resistant powder-coated mild steel body, this jar tester features heavy-gauge stainless steel stirring paddles and spindles. Backlit illumination powered by reflection-free white LEDs is positioned underneath a diffused acrylic base plate, giving operators cold, glare-free under-lighting to view fragile floc sample structures clearly without adding distorting thermal energy to the test samples.
Technical Specifications
| Feature / Parameter | Details |
|---|---|
| Product Type | Flocculator / Jar Test Apparatus / Multiple Spindle Stirrer |
| Model Number | 1922 |
| Brand | EI-DVI |
| Stirring Capacity | 2 Spindles / Accepts 2 Test Samples Simultaneously |
| Jar Capacity Acceptance | Accommodates standard round laboratory beakers up to 1L or 2L |
| Speed Range | 10 to 300 RPM (Continuously Variable Speed Control) |
| Speed Regulation | Electronic Speed Regulator with highly stable ±2 RPM tracking accuracy |
| Digital Display | High-Visibility Bright LED Panel Indicator |
| Timer System | Integrated Digital Timer, 1 to 99 Minutes (Auto-stop with audible alert & automatic settling count-up) |
| Pre-set Programs | 2 Single-Button Custom Memory Recall Locations |
| Control Interface | Touch-Sensitive Keypad (completely flat, hermetically sealed) |
| Illumination System | Built-in Cold Light Base Panel (White LEDs beneath Diffuse Acrylic Plate) |
| Material Construction | Powder-Coated Mild Steel (MS Body) with Stainless Steel (SS) Stirring Rods & Paddles |
| Paddle Adjustment | Independent Height Adjustment via Secure Locking Knobs |
| Power Architecture | 230V AC, 50Hz, Single Phase (100W Power Consumption) |
| Warranty Protection | 1-Year Manufacturer Warranty |
| Included Accessories | Stainless Steel Paddles & Rods, Fitted Dust Cover, Step-by-Step Instruction Manual |
Core Features & User Benefits
The Model 1922 is purpose-built to solve standard lab throughput and accuracy limitations encountered during water chemistry optimization.
- Dual-Phase Automated Process Timer Counts down for precise jar test mixing, cuts power automatically with an acoustic alert, and instantly logs subsequent upward sedimentation time.
- Glare-Free Cold LED Transillumination Placed underneath a diffuse acrylic base to cast shadowless light through beaker bases, enabling clear observation of fine floc structures without adding thermal interference.
- Flat Touch-Sensitive Control Interface Completely seamless user control deck wipes clean instantly, preventing chemical degradation or moisture ingress into the electronic speed regulator core.
- One-Touch Single-Button Program Storage Stores and executes 2 complex user configuration workflows for time and rotational speed, guaranteeing testing replication between shifts.
- Corrosion-Proof Height-Adjustable Paddles Heavy-duty stainless steel paddles feature independent lock knobs, allowing effortless adjustments to paddle depth without disturbing surrounding samples.
- Concurrent Dual-Sample Multi-Spindle Testing Features a space-saving 2-place spindle layout that allows labs to test multiple chemical dosing configurations side-by-side.
Frequently Asked Questions (FAQ)
What is the primary application of the Model 1922 Digital Flocculator Jar Test Apparatus?
The Model 1922 Digital Flocculator Jar Test Apparatus is primarily used to perform flocculation (jar) tests on water and effluent samples to calculate optimal chemical coagulant dosing. It precisely simulates industrial water and sewage treatment plant sedimentation processes in benchtop environments.
This systematic analysis prevents over-chemicalization or under-treatment during large-scale operations, protecting water treatment infrastructure budgets and regulatory compliance parameters.
How does the integrated digital timer inside the Model 1922 assist in sedimentation tracking?
The Model 1922 jar test apparatus features an automated dual-action timer tracking sequence that counts down agitation run-times up to 99 minutes. After automatically stopping the paddles with an audible alert, it initiates a count-up timer to track exact settling time parameters.
This dual-phase logic eliminates the manual stop-watch guesswork typically required to gauge when flocculated material drops completely out of suspension.
Can the stirring speed on this multi-spindle flocculation tester be customized for slow mixing phases?
Yes, the EI-DVI Model 1922 flocculator provides variable speed regulation extending across a wide 10 to 300 RPM range, managed via an electronic controller. This variable flexibility allows researchers to shift between flash-mixing cycles and gentle slow-agitation growth phases smoothly.
The electronic speed control module protects torque distribution to both stainless steel spindles equally, maintaining stable rotation even as liquid viscosity transforms.
What type of lighting system does the Model 1922 jar test system use for sample observation?
The Model 1922 jar test apparatus uses high-efficiency white LEDs positioned directly underneath a diffuse plastic acrylic floor plate to generate cold base illumination. This specific layout distributes glare-free, uniform light vertically into the test beakers for superior sample visibility.
Because these industrial LED emitters emit zero radiant heat, they do not create localized convection currents that could break apart fragile floc structures.
Are the beaker containers included in the standard Model 1922 flocculator package?
The standard Model 1922 kit includes the mild steel body, dual stainless steel stirring spindles with lock adjustment knobs, a protective dust cover, and an instruction manual. Test beakers are sold as an optional accessory to allow facilities to choose their preferred layout.
The base layout is engineered to accept standard laboratory round glass or plastic vessels with fluid capacities reaching up to 1 Liter or 2 Liters comfortably.
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