SKU: 36248790751

API Freshwater Master Test Kit

Sale price$641.25 Regular price$712.50
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Description

API Freshwater Master Test KitAPI Freshwater Master Test Kit API Freshwater Master Test Kit is used to measure the pH, high range pH, ammonia, nitrite, and nitrate levels in freshwater aquariums for accurate water quality monitoring. The API FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high range pH, ammonia, nitrite, and nitrate. With scientific accuracy for professional results, the reusable

API Freshwater Master Test Kit

API Freshwater Master Test Kit is used to measure the pH, high-range pH, ammonia, nitrite, and nitrate levels in freshwater aquariums for accurate water quality monitoring.

The API® FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high-range pH, ammonia, nitrite, and nitrate. With scientific accuracy for professional results, the reusable FRESHWATER MASTER TEST KIT comes with 4 glass test tubes with snap-tight caps and a convenient holding tub for easy storage. Also includes a step-by-step instruction booklet with a color chart that provides information on how to correct unsafe water conditions.

We recommend that you take a few minutes each week to monitor your aquarium conditions and create a better underwater world for your fish. Testing your aquarium water has never been so easy or accurate! 

Sizes

Contains 800 tests and includes 7 test solutions, easy-to-ready instructions, 4 glass test tubes and color chart

FAQ

Why test pH?

pH is the measure of acidity in your water. A pH reading of 7.0 is neutral, a pH higher than 7.0 is alkaline, and a pH lower than this level is acidic. It is important to keep your aquarium at the appropriate pH level to ensure optimal water quality for your specific fish species, as different types of fish require different pH levels for their habitats. API® FRESHWATER MASTER TEST KIT will enable you to test the pH levels in your water as often as needed!

Why test for Ammonia?

Fish continually release ammonia directly into the water through their gills, urine, and solid waste. Uneaten food and other waste also add ammonia to the water. A natural way that your aquarium handles this ammonia is through the biological filter or natural aquarium cycle. However, as with any natural process, imbalances can occur. This is why it’s important to regularly test for the presence of ammonia, which can spike unexpectedly in your aquarium. As soon as it is detected, ammonia should be removed, otherwise, it will damage your fish’s gill membranes and harm their respiration, which can eventually result in fish death. Even small amounts of ammonia stress fish, suppressing their immune systems and increasing the likelihood of disease outbreaks. You can remove ammonia from your tank by performing a partial water change, and by dosing with a solution specifically designed to treat ammonia. Test frequently for high ammonia using API FRESHWATER MASTER TEST KIT.

Why test for Nitrite?

Testing for the presence of toxic nitrite is essential so that if it is detected, steps can be taken to remove it. If left untreated, nitrite in the water will hinder normal fish respiration, eventually leading to fish death. Even small amounts or low levels of nitrite stress fish, suppressing their immune systems and increasing the likelihood of disease, which is why it’s important to test for nitrite using API FRESHWATER MASTER TEST KIT. You can remove nitrite from your tank by performing a partial water change.

What does the FRESHWATER MASTER TEST KIT test for?

The FRESHWATER MASTER TEST KIT measures pH, high range pH, ammonia, nitrite, and nitrate in your freshwater aquarium.

What is included with the FRESHWATER MASTER TEST KIT?

The kit includes seven test solutions, easy-to-read instruction, glass test tubes, and a color chart.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 36248790751

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The Diabolical F
Bozeman, US
★★★★★ 4
Good wipers
Size: 22", Style: Latitude Repellency
Bought these wiper blades because my wiper blades were old. The new blades lay down a good level of water repellent on the windshield. I actually drove home this morning in a rainstorm and purposely did not turn on my wipers once, and the windshield stayed nicely beaded and cleared, a month after I put the new wipers on my truck. I recently bought my s/o a set for her vehicle. They’re expensive, but seem to be worth it. Very quiet, no chattering, 30 seconds to install on my F150.
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Reviewed in the United States on March 16, 2026
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MARCUS C.
Whiting, US
★★★★★ 5
Great Wiper for an Older Car!
Size: 24" and 20", Style: Water Repellency
Great Wiper, Great Fit, Great Delivery on Time and Great Reliability!
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Reviewed in the United States on May 23, 2026
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Jack At Florida
Boise, US
★★★★★ 5
Perfect Fit & Easy Install — Replaced Faulty Blade from Another Set
Size: 17", Style: Latitude Repellency
This 17" Rain-X blade ended up replacing a faulty 17" blade from a 5 PLUS set (24"/17"/12") I originally installed. The 17" from that set had a defective internal adapter — it wouldn’t seat properly on the wiper arm & was extremely difficult to remove. Once I got it apart, the adapter looked warped or misformed. Rather than deal with a full return, I replaced just the 17" with this Rain-X blade. Installation on the Rain-X was quick & straightforward — it locked in properly with no issues. Performance so far is solid: Smooth wipe No streaking No excess sound Good contact across the windshield Now I’m effectively running a side-by-side comparison (Rain-X 17" vs 5 PLUS 24"/12"), & I’ll update later if anything changes over time. Overall, this blade did exactly what I needed — simple install & reliable performance.
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Reviewed in the United States on April 3, 2026
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Alex
Omaha, US
★★★★★ 5
Incredible visibility upgrade for my Corolla!
Size: 24", Style: Latitude Repellency
I swapped my old, streaky blades for these Rain-X Latitudes on my 2005 Corolla, and the difference is night and day. The "2-in-1" feature actually works; after a few minutes of use, the water just beads off the glass, even when the wipers aren't on full speed. They were very easy to install with the included adapters and they wipe completely silent without any chatter. If you're prepping for a long road trip or just want better visibility in the rain, these are worth every penny.
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Reviewed in the United States on April 27, 2026
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Miranda
Lake Worth, US
★★★★★ 4
Great wipers!
Size: 24" and 19", Style: Water Repellency
Works very well, leaves the film for the water to bead off which is what I love about it! Still leaves it a little streaky when I us the washer fluid but I don’t know if it’s just the ones I got or not. Still love them because they work!!
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Reviewed in the United States on March 14, 2026

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