API Test Tubes are replacement glass test tubes for API liquid test kits, including the API Freshwater and Saltwater Master Test Kits. They’re handy spares if a tube is broken, lost or stained, so you can keep testing without interruption.

Each pack contains 24 glass test tubes, each with a 5 ml fill line for accurate sample measuring, plus 24 plastic caps to seal the tubes while you shake or invert them during testing.

Key Features

• Replacement Tubes: Made for API liquid and Master test kits
• 5 ml Fill Line: Clear mark for accurate sample measuring
• Glass Construction: Clear, easy-to-read colour results
• Caps Included: 24 plastic caps to seal tubes during testing
• 24 Pack: Plenty of spares for regular testing

How to Use

1. Rinse a test tube with clean water, then with a little aquarium water.
2. Fill to the 5 ml line with aquarium water, or as directed by your test kit.
3. Add test solutions as directed, cap the tube and shake or invert as instructed.
4. Rinse the tube thoroughly after each test.

Please note: Glass is fragile, so handle with care. Rinse tubes thoroughly after each use and store safely out of reach of children.

Suitable For: Owners of API liquid test kits needing spare or replacement test tubes.