Product Description
The Keen Dissolved Oxygen Test Kit RMR-2009 is a titration-based chemical kit used to measure dissolved oxygen in water. It reports the result in ppm or mg/L and uses a modified Winkler method with a simple drop-count calculation.
The kit measures dissolved oxygen from 0.5 to 20 ppm with a resolution of 0.5 ppm per drop and a stated tolerance of +/- 0.5 ppm. It includes pre-prepared reagents, a 10 ml test tube, a sample-collecting syringe and an instruction manual.
Dissolved oxygen is an important water-quality parameter in fisheries, ponds, aquaculture, biofloc systems, surface water and selected industrial or boiler-water applications. The supplied reagent quantity is intended for approximately 100 tests.
Key Features
- Brand: Keen
- Model / CAT No.: RMR-2009
- SKU: RMR-20090100
- Measures dissolved oxygen in water
- Measurement range: 0.5-20 ppm
- Resolution: 0.5 ppm per drop
- Stated tolerance: +/- 0.5 ppm
- Modified Winkler titration method
- Easy manual drop-counting calculation
- No electronic meter or calibration procedure required
- Approximately 100 tests per kit
- Pre-prepared reagent solutions
- Reagent bottles marked with lot and expiry information
- Includes six reagent bottles, test tube, syringe and instructions
- Country of origin: Bangladesh
Product Overview
Dissolved oxygen refers to oxygen present in water and available to aquatic organisms. Monitoring it helps users assess aeration, biological activity, organic loading and general water conditions.
The RMR-2009 uses chemical oxygen fixation followed by iodine formation and thiosulfate titration. The endpoint is reached when the developed colour disappears and the solution becomes transparent.
| Specification | Details |
| Product name | Dissolved Oxygen Test Kit for Water |
| Brand | Keen |
| Model / CAT No. | RMR-2009 |
| SKU | RMR-20090100 |
| Measurement type | Titrimetric |
| Method | Modified Winkler method |
| Measurement range | 0.5-20 ppm |
| Resolution | 0.5 ppm per drop |
| Tolerance | +/- 0.5 ppm |
| Sample volume | 10 ml |
| Test capacity | Approximately 100 tests |
| Reagent contents | DO-1, DO-2, DO-3, DO-4 and two bottles of DO-5 |
| Other contents | 10 ml test tube, 10 ml sample syringe and instruction manual |
| Approximate weight | 410 g |
| Box dimensions | 124 mm x 113 mm x 97 mm |
| Origin | Bangladesh |
Main Applications
- Fish farms, hatcheries and aquaculture systems
- Ponds and biofloc fish-culture systems
- Freshwater and surface-water monitoring
- Rivers, lakes and reservoir water checks
- Wastewater and treatment-process monitoring
- Boiler-system and selected industrial water checks
- Environmental field testing
- Educational and laboratory water analysis
- Monitoring aeration efficiency in water systems
Key Benefits
Manual DO Measurement
The kit provides a chemical method for measuring dissolved oxygen without an electronic probe, battery or instrument calibration.
Clear Drop-Count Result
Each drop of the final DO-5 titrant represents 0.5 ppm of dissolved oxygen, making the calculation direct and easy to record.
Complete Test Setup
The package includes all main reagents, the test tube, sample syringe and instructions required for routine testing.
Suitable for Repeated Monitoring
Approximately 100 tests per kit support regular monitoring in fish farms, ponds, laboratories and water-treatment operations.
Traceable Reagents
The manufacturer states that reagent bottles carry lot and expiry information to support inventory and quality records.
Who Should Buy This Product?
- Fish farmers and aquaculture operators
- Biofloc and pond-management teams
- Fish hatcheries and fisheries projects
- Water-treatment and wastewater facilities
- Environmental monitoring teams
- Laboratories and educational institutions
- Boiler and industrial water-management personnel
- NGOs, government projects and institutional procurement teams
Usage and Handling Summary
Follow the current instruction manual supplied with the kit. The standard procedure is summarised below:
- Rinse the test tube with clean water before testing.
- Use the supplied syringe to collect 10 ml of sample water and slowly fill the test tube.
- Add 4 drops of DO-1 reagent and then 4 drops of DO-2 reagent.
- Mix and wait for approximately 1 minute. A brown precipitate indicates oxygen is present, while a white precipitate indicates no detectable dissolved oxygen.
- Add 4 drops of DO-3 reagent and then 4 drops of DO-4 reagent. Mix thoroughly.
- Add DO-5 reagent one drop at a time while mixing.
- Count the DO-5 drops until the colour disappears and the solution becomes transparent.
- Multiply the number of DO-5 drops by 0.5 to calculate dissolved oxygen in ppm.
- Record the result and rinse the test tube and syringe after use.
Handling Precautions
- Keep all reagents out of the reach of children.
- Keep the kit away from heat, strong light and flame.
- Use the kit only by laboratory or technically competent personnel.
- Avoid skin and eye contact with the reagents.
- Rinse with plenty of water following accidental contact.
- Dispose of used samples and chemical reagents safely.
- Close every reagent bottle immediately after use.
Limitations and Important Considerations
- The result is based on a manual chemical titration and visual endpoint observation.
- The stated resolution is 0.5 ppm per drop, and the manufacturer states a tolerance of +/- 0.5 ppm.
- Strongly coloured, cloudy or highly turbid water may make the endpoint more difficult to observe.
- Dissolved oxygen can change when the sample is exposed to air, heat, agitation or biological activity, so test the sample promptly.
- The sample must be collected carefully to reduce air bubbles and unnecessary aeration.
- The kit is intended for water samples and should not be used for measuring oxygen in air, blood or other unsupported sample types.
- Formal regulatory, legal or accredited laboratory decisions may require confirmation with an approved instrumental or reference method.
- Shelf life should be checked from the expiry information printed on the supplied reagent bottles.
Available Pack Sizes or Variations
The confirmed product variation covered on this page is the Keen RMR-2009 Dissolved Oxygen Test Kit supplied for approximately 100 tests.
Availability of refill reagents, individual replacement bottles, alternative ranges or other pack sizes has not been confirmed. Contact Inaya Scientific for confirmation.
Keen Dissolved Oxygen Test Kit Price in Bangladesh
The current Keen Dissolved Oxygen Test Kit price in Bangladesh may vary according to stock, product batch, expiry date, order quantity and delivery location. The current selling price from Inaya Scientific has not been provided.
Contact Inaya Scientific for confirmation of the latest price, current stock, expiry information and quotation for bulk or institutional orders.
Availability and Delivery in Bangladesh
The Keen RMR-2009 Dissolved Oxygen Test Kit can be ordered from Inaya Scientific, subject to current stock confirmation.
Nationwide delivery is available across Bangladesh, including Dhaka, Chattogram, Rajshahi, Khulna, Sylhet, Barishal, Rangpur, Mymensingh and other districts. Delivery charges and estimated delivery time depend on destination, courier service and order quantity.
Why Buy From Inaya Scientific?
- Current price and stock confirmation before ordering
- Nationwide delivery across Bangladesh
- Support for individual, commercial and institutional buyers
- Bulk-order and procurement quotations on request
- Batch and expiry-date confirmation when available
- Assistance in selecting suitable water-testing products
- Communication through mobile, WhatsApp and email
Any required certificate, technical document, invoice condition or procurement specification should be confirmed with Inaya Scientific before placing the order.
Frequently Asked Questions
What does the Keen RMR-2009 Dissolved Oxygen Test Kit measure?
It measures dissolved oxygen in water and reports the result in ppm or mg/L. The confirmed measurement range is 0.5-20 ppm with a resolution of 0.5 ppm per drop.
What method does the Keen Dissolved Oxygen Test Kit use?
It uses a modified Winkler titration method. The process fixes oxygen chemically, forms iodine and then measures the iodine by drop-count titration.
How do I calculate the dissolved oxygen result?
Count the drops of DO-5 reagent required for the colour to disappear. Multiply the number of DO-5 drops by 0.5 to obtain the dissolved oxygen concentration in ppm.
How much water sample is required for one test?
The standard procedure uses a 10 ml water sample. The supplied syringe and test tube are designed to help collect and measure this sample volume.
How many tests can be performed with one kit?
The kit contains enough reagents for approximately 100 tests. The actual number may vary slightly according to reagent use and the dissolved oxygen level of the samples.
Can this test kit be used for fish farms and biofloc systems?
Yes, it is suitable for routine dissolved oxygen monitoring in fish farms, ponds, hatcheries, aquaculture and biofloc systems. Regular DO testing can support aeration and water-management decisions.
Does the kit require calibration?
No instrument calibration is required because the RMR-2009 is a chemical drop-count titration kit. Accurate sample volume, correct drop counting and careful endpoint observation are still important.
What is included in the RMR-2009 kit?
The kit includes six reagent bottles, a 10 ml test tube, a 10 ml sample-collecting syringe and an instruction manual. The reagent set includes DO-1, DO-2, DO-3, DO-4 and two bottles of DO-5.
How should the Keen Dissolved Oxygen Test Kit be stored?
Keep the reagent bottles tightly closed and away from heat, strong light and flame. Follow the storage and expiry information printed on the supplied batch and contact Inaya Scientific if clarification is required.
Where can I buy the Keen Dissolved Oxygen Test Kit in Bangladesh?
You can order the RMR-2009 kit from Inaya Scientific, subject to current stock. Nationwide delivery and quotations for bulk or institutional orders are available on request.
Closing Recommendation
The Keen Dissolved Oxygen Test Kit RMR-2009 is a practical option for routine DO monitoring where a portable chemical test is preferred over an electronic meter. Its 0.5 ppm drop resolution, modified Winkler method and approximately 100-test capacity make it suitable for fisheries, ponds, aquaculture, laboratories and water-treatment work.
For consistent results, collect the sample carefully, follow the reagent order, observe the waiting time, mix after each step and count the final titrant drops accurately.
Order From Inaya Scientific
Contact Inaya Scientific to order the Keen RMR-2009 Dissolved Oxygen Test Kit and confirm the latest price, available stock, expiry details, delivery charge and bulk-order quotation.
| Seller | Inaya Scientific |
| Product | Keen Dissolved Oxygen Test Kit |
| Model | RMR-2009 |
| Pack Size | Approximately 100 Tests |
| Mobile | +880 1778-492798 |
| 01620247815 | |
| inayascientific@gmail.com | |
| Website | www.inayascientific.com |
| Delivery | Nationwide delivery across Bangladesh |
When placing an order, provide the product name, model number, required quantity, delivery address and contact number.
