API FRESHWATER MASTER TEST KIT
Fish need properly balanced levels of ammonia, pH, high range pH, nitrite and nitrate. The API FRESHWATER MASTER TEST KIT measures these six parameters with scientific accuracy and provides professional results. It comes with four glass test tubes, a holding tray, test tube rack and computer calibrated, laminated colour card. Just fill the test tubes, add the test drops and compare results to the colour card. Then follow the recommendations on the card if action is required.
Key Features
- Measures six key water parameters: ammonia, pH, high range pH, nitrite, nitrate
- Scientifically accurate testing results
- Includes four glass test tubes, holding tray, test tube rack
- Computer calibrated laminated colour card for easy comparison
| Parameter | Test Method |
|---|---|
| Ammonia | Colorimetric test using reagent drops |
| pH | Standard pH test with color comparison |
| High range pH | Extended pH scale test |
| Nitrite | Colorimetric detection with reagent |
| Nitrate | Colorimetric test for nitrate levels |
FAQ
How often should I use this test kit?
It is recommended to test water parameters weekly or after any significant change in water conditions, such as water changes or new fish additions.
Can this kit be used for saltwater tanks?
No, this kit is specifically designed for freshwater aquariums only.
Is the colour card reusable?
The colour card is laminated and durable, but it is not designed for repeated use. Once the colour chart is used, it should be stored or replaced.

Sonia Welch –
This test kit has been very reliable for monitoring my aquarium’s water quality. The instructions are clear and the results match what I see in my tank. I use it weekly and it helps me catch imbalances early.
Felicity Slater –
The test tubes are easy to handle and the colour card is very accurate. I noticed a small improvement in my fish’s behavior after following the recommendations from the card.
Joanne MacLeod –
I’ve used this kit for over a year and it still works perfectly. The only thing I wish was a digital version, but the accuracy is excellent and it’s simple to use.
Sally Graham –
The kit arrived quickly and the components are well packed. I found the high range pH test especially useful for adjusting my tank’s balance.