---
product_id: 67852929
title: "Salifert RTKA Potassium Test Kit"
brand: "salifert"
price: "₪136"
currency: ILS
in_stock: true
reviews_count: 3
url: https://www.desertcart.co.il/products/67852929-salifert-rtka-potassium-test-kit
store_origin: IL
region: Israel
---

# Accurate 250-470 ppm range Up to 40 precise tests Fast & easy testing Salifert RTKA Potassium Test Kit

**Brand:** salifert
**Price:** ₪136
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your reef thriving with precision you can trust!

## Quick Answers

- **What is this?** Salifert RTKA Potassium Test Kit by salifert
- **How much does it cost?** ₪136 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/67852929-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 Test Supply:** Up to 40 tests per kit means consistent monitoring without frequent repurchases.
- • **Marine-Optimized Formula:** Specifically designed for saltwater aquariums to maintain natural seawater balance.
- • **Trusted Dutch Engineering:** Made in Holland with quality standards that professionals rely on worldwide.
- • **User-Friendly & Time-Saving:** Get reliable results quickly without complicated steps—perfect for busy reef keepers.
- • **Precision Potassium Monitoring:** Ensure vibrant coral colors with lab-grade accuracy from 250 to 470 ppm.

## Overview

The Salifert RTKA Potassium Test Kit offers fast, easy, and highly accurate potassium measurements tailored for marine aquariums. Covering a critical range of 250 to 470 ppm, it supports up to 40 tests per kit, helping aquarists maintain optimal coral coloration and health. Engineered in Holland, this kit is a must-have for professional and hobbyist reef keepers aiming for consistent, reliable water quality monitoring.

## Description

Product 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. Safety Warning KEEP OUT OF REACH OF CHILDREN. Not for consumption.

Review: Easy to use test kot - Thos is a really easy and reliable test kit to use. No need to spend more than you need when this simple test performs accurately.
Review: Accurate, easy test for potassium. - Easy to use. Quick test for potassium and very repeatable results.

## Features

- Causes serious eye irritation.
- Causes skin irritation.
- 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 |
|---------------|-------|
| Product Dimensions | 10.92 x 5.08 x 12.7 cm; 91 g |
| Item model number | RTKA |
| Pet Life Stage | All life stages |
| Number of Items | 1 |
| Quantity | 1 |
| Batteries required | No |
| Batteries Included | No |
| Item Weight | 91 g |

## 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

### ⭐⭐⭐⭐⭐ Easy to use test kot
*by M***. on 4 May 2022*

Thos is a really easy and reliable test kit to use. No need to spend more than you need when this simple test performs accurately.

### ⭐⭐⭐⭐⭐ Accurate, easy test for potassium.
*by B***O on 2 February 2019*

Easy to use. Quick test for potassium and very repeatable results.

### ⭐⭐⭐⭐ Good value for money
*by E***S on 26 October 2022*

It works fine but could be easier/quicker and as most of Salifert tests they are good but the packaging(box) is poor, thats probably why they are the cheapest ; However I do think its definitely woth it! good value for money test!

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.co.il/products/67852929-salifert-rtka-potassium-test-kit](https://www.desertcart.co.il/products/67852929-salifert-rtka-potassium-test-kit)

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-04-22*