---
product_id: 31043710
title: "Salifert RTKA Potassium Test Kit"
brand: "salifert"
price: "11.90 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Salifert"
url: https://www.desertcart.com.om/products/31043710-salifert-rtka-potassium-test-kit
store_origin: OM
region: Oman
---

# Up to 40 precise tests per kit Accurate potassium measurement 250-470 ppm Fast results in minutes Salifert RTKA Potassium Test Kit

**Brand:** salifert
**Price:** 11.90 OMR
**Availability:** ✅ In Stock

## Summary

> 🔬 Stay ahead of your reef’s health with precision potassium testing!

## Quick Answers

- **What is this?** Salifert RTKA Potassium Test Kit by salifert
- **How much does it cost?** 11.90 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/31043710-salifert-rtka-potassium-test-kit)

## Best For

- salifert enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Supply:** Perform up to 40 tests per kit—perfect for consistent monitoring without frequent repurchasing.
- • **Marine-Grade Accuracy:** Specifically designed for marine aquariums, ensuring results tailored to your reef’s unique needs.
- • **Rapid Precision Testing:** Get reliable potassium levels in your reef water within minutes, no guesswork needed.
- • **Optimal Coral Color Boost:** Maintain natural 400 ppm potassium to enhance vibrant coral hues and reef health.
- • **Trusted Dutch Engineering:** Crafted in the Netherlands with premium quality standards for dependable, professional-grade testing.

## Overview

The Salifert RTKA Potassium Test Kit offers fast, easy, and highly accurate potassium measurements ranging from 250 to 470 ppm, essential for maintaining vibrant coral colors in marine aquariums. Designed for up to 40 tests per kit and made in the Netherlands, it’s the trusted choice for reef enthusiasts seeking reliable, professional-grade water testing.

## Description

Salifert Potassium Reef Test Potassium concentration in natural seawater is approximately 400 ppm. Many aquarists have reported that a low potassium value reduces colors in corals. This can be corrected by increasing the potassium value to the normal natural concentration. Now you can accurately measure this value with the new Salifert Potassium Reef Test kits.

Review: salifert is great - easy to use and accuracy is good enough for your reef tank
Review: It works!!! - I recommended this for a friend who is on a low-potassium (K) diet. I figured that if it worked for aquarium water it would work for water that boiled potatoes, which have a high K content. After one boil in a full pot of water the K level of the boiled water was high. But after three boils the K level in the boiled was significantly lower. (Boiling is recommended by doctors for lowering K content.) This test helps her to know if boiling or other water-soak methods to lower K in food will help her decision on her diet. Still, I recommended that she not gorge on boiled potatoes but only eat a small amount to satisfy a craving.

## Features

- Fast, easy, and accurate
- Measures potassium from concentrations of 250 ppm to 470 ppm
- Sufficient for up to 40 tests
- For marine use only
- Made in Holland

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0084CO4LC |
| ASIN  | B0084CO4LC |
| Age Range Description | All Stages |
| Best Sellers Rank | #59,395 in Pet Supplies ( See Top 100 in Pet Supplies ) #96 in Aquarium Test Kits #561 in Aquarium Water Treatments |
| Brand Name | Salifert |
| Color | Clear |
| Country of Origin | Netherlands |
| Customer Reviews | 4.2 4.2 out of 5 stars (126) |
| Date First Available | December 21, 2012 |
| Date First Available  | December 21, 2012 |
| Directions | Please see packaging for directions. |
| Included Components | See packaging |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 4.3 x 2 x 5 inches |
| Item Package Dimensions L x W x H | 4.33 x 3.43 x 1.77 inches |
| Item Weight | 3.2 ounces |
| Item model number | RTKA |
| Item model number  | RTKA |
| Manufacturer | Royal Aquatic LLC |
| Manufacturer  | Royal Aquatic LLC |
| Model Name | Potassium Test Kit |
| Number of Items | 1 |
| Product Dimensions  | 4.3 x 2 x 5 inches; 3.21 ounces |
| Size | 7 Piece Set |
| Specific Uses for Product | Water Testing |
| Target Audience Keyword | Fish |

## Images

![Salifert RTKA Potassium Test Kit - Image 1](https://m.media-amazon.com/images/I/71BleRDgHNL.jpg)
![Salifert RTKA Potassium Test Kit - Image 2](https://m.media-amazon.com/images/I/81wEcbO6QgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ salifert is great
*by A***R on April 6, 2024*

easy to use and accuracy is good enough for your reef tank

### ⭐⭐⭐⭐⭐ It works!!!
*by A***Y on November 18, 2018*

I recommended this for a friend who is on a low-potassium (K) diet. I figured that if it worked for aquarium water it would work for water that boiled potatoes, which have a high K content. After one boil in a full pot of water the K level of the boiled water was high. But after three boils the K level in the boiled was significantly lower. (Boiling is recommended by doctors for lowering K content.) This test helps her to know if boiling or other water-soak methods to lower K in food will help her decision on her diet. Still, I recommended that she not gorge on boiled potatoes but only eat a small amount to satisfy a craving.

### ⭐⭐⭐⭐⭐ Very good 👍
*by V***� on December 6, 2025*

Very good 👍

## Frequently Bought Together

- Salifert RTKA Potassium Test Kit
- Salifert Calcium (Ca) Test Kit - 50 to 100 Tests

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-20*