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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
JBL KH Test RefillSimple and reliable control of water values in aquariums and ponds. Determination of the optimal carbonate hardness for freshwater and saltwater Colour change test: Fill plastic cuvette with water sample, add reagent drop by drop until colour changes from blue to yellow. Number of drops = level of carbonate hardness When to use: when setting up a new aquarium: once a week Online Laboratory: regular control for a healthy aquarium pond with conditions
- Simple and reliable control of water values in aquariums and ponds. Determination of the optimal carbonate hardness for freshwater and saltwater
- Colour change test: Fill plastic cuvette with water sample, add reagent drop by drop until colour changes from blue to yellow. Number of drops = level of carbonate hardness
- When to use: when setting up a new aquarium: once a week
- Online Laboratory: regular control for a healthy aquarium/pond with conditions close to nature. JBL has water tests in the form of quick tests or colour change tests for every water analysis. Testing aquarium water for healthy, clear water
- Package contents: 1 quick test, KH Test. Incl. reagent and plastic vial. Refill reagent avaiable separately
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.8 ★★★★★
Based on 184 reviews
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Product Reviews
★★★★★ 1
I have no plans today because I had no space
Color: Black
This was not good
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Reviewed in the United States on May 13, 2026
★★★★★ 5
room divider
Color: Black
all good...ez to assemble
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Excellent quality, excellent privacy.
Color: White, Size: 4 Panel
I love this room divider! Was easy to put together. It's easy to move around. I also bought the eight panel. I move it and change it around all the time. Good color good material good privacy.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
It works to divide a room, but it's not easy to use.
Color: Grey, Size: 6 Panel
This comes in multiple pieces and you have to build every single piece including the cloth that is between the two poles. There are plastic clips to hold the sections together, but they easily come off if you move the dividers the wrong way or try to reposition it. The only thing holding it up is rectangular shaped feet on the bottom and they are a pain when you hit it with your toes. It works if you need to divide a room, but its not pretty and there are far better options. It's cheaply made and has a habit of falling down if you are trying to use it in a straight or slightly angled line.
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Reviewed in the United States on December 26, 2022
★★★★★ 4
Nice divider
Color: Black, Size: 6 Panel
Nice divider. Set up is a bear. I am a bit concerned with stability. Overall I like it.
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Reviewed in the United States on March 12, 2026