---
product_id: 7253542
title: "REPLACEMENT PLASTIC TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box"
brand: "api"
price: "Rp1224964"
currency: IDR
in_stock: true
reviews_count: 13
category: "Api"
url: https://www.desertcart.id/products/7253542-replacement-plastic-test-tubes-with-caps-for-any-aquarium-test
store_origin: ID
region: Indonesia
---

# snap-tight secure caps 24 precision plastic test tubes universal compatibility REPLACEMENT PLASTIC TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box

**Brand:** api
**Price:** Rp1224964
**Availability:** ✅ In Stock

## Summary

> 🧬 Upgrade your aquarium testing game—because your fish deserve precision and peace of mind!

## Quick Answers

- **What is this?** REPLACEMENT PLASTIC TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box by api
- **How much does it cost?** Rp1224964 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/7253542-replacement-plastic-test-tubes-with-caps-for-any-aquarium-test)

## Best For

- api enthusiasts

## Why This Product

- Trusted api brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Plastic Design:** Robust, crack-resistant plastic tubes built to withstand frequent use and cleaning without compromise.
- • **Universal API & Beyond:** Fits all API test kits plus many other brands—your go-to replacement for freshwater, saltwater, reef, and pond setups.
- • **Leakproof Snap-Tight Caps:** Secure sealing prevents spills and contamination, ensuring flawless, reliable water tests every time.
- • **Essential Aquarium Maintenance:** Keep your aquatic ecosystem thriving with hassle-free, precise water parameter monitoring.
- • **Bulk Ready for Multi-Tank Mastery:** 24-pack lets you test multiple aquariums without pause—never run out mid-check.

## Overview

This 24-count box of API Replacement Plastic Test Tubes with snap-tight caps offers a durable, leakproof solution compatible with all API aquarium test kits and many others. Designed for freshwater, saltwater, reef, and pond aquariums, these tubes ensure accurate, contamination-free water testing to maintain optimal aquatic health.

## Description

API TEST TUBES serve as replacement test tubes for those included in API TEST KITS. Product comes with 24 capped test tubes in API box. Test tubes may be used with all liquid API TEST KITS. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Review: Perfect Replacement Test Tubes – Great for API Test Kits! - The API Replacement Test Tubes with Caps are a fantastic solution for anyone in need of replacement tubes for their aquarium test kits. I use an API test kit to monitor the water parameters in my tank, and these replacement tubes fit perfectly. The quality is excellent—thick glass that feels durable and resists cracking or breaking during use. The included caps are a great addition, ensuring no spills or accidental contamination of test samples, which is crucial for accurate results. These tubes are easy to clean and work just as well as the original ones that came with my API test kit. What I really appreciate about these replacement test tubes is how versatile they are. They fit not only API test kits but also many other brands of aquarium test kits, making them a great universal option for anyone who needs new test tubes. For anyone using an API kit, these are an essential and affordable replacement part that keeps everything running smoothly. I highly recommend the API Replacement Test Tubes with Caps—they’re high-quality, reliable, and perfect for maintaining your aquarium's water quality testing.
Review: Good Quality - Perfect plastic tubes! Just like the ones in the API master kit. I’m able to check all of my tanks at once now!

## Features

- Contains one (1) API REPLACEMENT TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box
- Compatible with any aquarium water test kits including freshwater and saltwater test kit, pH test kit, ammonia test kit, nitrate test kit, reef test kit, calcium test kit and more
- The API test tubes are perfect to replace API Freshwater Master Test Kit tubes, API Saltwater Master Test Kit tubes, API Reef Master Test Kit tubes, API Pond Master Test Kit tubes and any other API Test Kit tubes
- Snap-tight plastic caps
- Use when original tubes have been lost or damaged

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002AQL5G |
| ASIN  | B0002AQL5G |
| Best Sellers Rank | #34,246 in Pet Supplies ( See Top 100 in Pet Supplies ) #49 in Aquarium Test Kits |
| Brand Name | API |
| Color | No Color |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,315) |
| Date First Available | June 15, 2004 |
| Date First Available  | June 15, 2004 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 7.13 x 1.25 x 3.5 inches |
| Item Package Dimensions L x W x H | 7.13 x 3.54 x 1.34 inches |
| Item Weight | 3.2 ounces |
| Item model number | 32 |
| Item model number  | 32 |
| Manufacturer | Mars Fishcare |
| Manufacturer  | Mars Fishcare |
| Material | Plastic |
| Model Name | PLASTIC REPLACEMENT TEST TUBES W/CAPS |
| Number of Items | 1 |
| Product Dimensions  | 7.13 x 1.25 x 3.5 inches; 3.21 ounces |
| Size | 24 PACK |
| Style | Replacement Test Tubes |
| Target Audience Keyword | fish |

## Images

![REPLACEMENT PLASTIC TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box - Image 1](https://m.media-amazon.com/images/I/61ISuZ5rlRL.jpg)

## Questions & Answers

**Q: What are the dimensions of the vial? Is there a cheaper alternative? 20 dollars seems like a lot for what we're getting.**
A: If you don't need 20 of them, you can get a 6 pack for a lot cheaper: https://www.amazon.com/Aquarium-Pharmaceuticals-API-Replacement-Test/dp/B07G4NGMM8/ref=sr_1_1?keywords=5ml+test+tube&qid=1645582702&sr=8-1 More expensive per tube though.

**Q: Can these be used to store Isopropyl Alcohol for on to go first aid kit? How big is the tube and is it fragile or strong enough for extended use?**
A: I have noticed that the caps, while quite appropriate for water parameter test kits, would not be suitable for long-term storage of any liquid. They leak a bit.

**Q: What test tube rack would be best for these?**
A: I built my own. If you want a cheap hack, get a block of styrofoam and press the top of an open test tube into it at intervals to get the outer diameter perfect. Then cut out the styrofoam to the best depth. Test tubes fit snugly.

**Q: Do you sell just a box of replacement caps?**
A: If you looked for caps already and no results, that means that tubs with caps are sell together. No separate. You might want to contact the API and asked them directly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Replacement Test Tubes – Great for API Test Kits!
*by T***H on December 18, 2024*

The API Replacement Test Tubes with Caps are a fantastic solution for anyone in need of replacement tubes for their aquarium test kits. I use an API test kit to monitor the water parameters in my tank, and these replacement tubes fit perfectly. The quality is excellent—thick glass that feels durable and resists cracking or breaking during use. The included caps are a great addition, ensuring no spills or accidental contamination of test samples, which is crucial for accurate results. These tubes are easy to clean and work just as well as the original ones that came with my API test kit. What I really appreciate about these replacement test tubes is how versatile they are. They fit not only API test kits but also many other brands of aquarium test kits, making them a great universal option for anyone who needs new test tubes. For anyone using an API kit, these are an essential and affordable replacement part that keeps everything running smoothly. I highly recommend the API Replacement Test Tubes with Caps—they’re high-quality, reliable, and perfect for maintaining your aquarium's water quality testing.

### ⭐⭐⭐⭐⭐ Good Quality
*by K***N on June 2, 2025*

Perfect plastic tubes! Just like the ones in the API master kit. I’m able to check all of my tanks at once now!

### ⭐⭐⭐⭐⭐ Glass tubes for API test kits...
*by D***Y on August 23, 2024*

API test kits have switched over to using plastic vials. While less breakable, the plastic ones become stained if you dont promptly clean them out thoroughly. Also the plastic 5mm lines are often difficult to see. These glass tubes are the actual API tubes with the 5 mm fill lines and very secure caps. They are far easier to clean out than the plastic ones and if capped are less likely to spill. Now sure youll occassionally drop one and break it. But with this set you'll have plenty to replace broken ones and do as many tests as you want to compare before and after readings. I got a tube holder here on Amazon that also allows me to have several sets of the 7 tests I do displayed without risk of dropping them or knocking the off tables. Really is well worth having these if you do the API water testing much.

## Frequently Bought Together

- API Replacement Test Tubes With Caps
- WUTUDMAI 2 Pcs Test Tube Stand Holders 6 Holes 6 Column Plastic Test Tube Racks Portable Test Tube Racks for Laboratory School Home (Blue PP)

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-03-04*