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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
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Description
JBL KH Test KitSimple 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 available 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
4.1 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Great looking Cotton tank
Size: Small, Color: White
Love this tshirt. Have worn but not washed yet. So will add when I know if it shrinks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
★★★★★ 1
I wouldn’t call it a ribbed shirt if it’s almost see through
Size: Medium, Color: Black
Cheap thin looking fabric returned it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 3
Runs large with gaping arm holes.
Size: Large, Color: White
This runs extra large and the arm holes are gaping. You can see your undergarments through the arm holes. I am hoping that the shirt shrinks in the wash.
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Reviewed in the United States on January 17, 2026
★★★★★ 5
It soft and fits perfectly
Size: Large, Color: Black
Good love it
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Nice fit
Size: Medium, Color: Black
Its good i like it
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Reviewed in the United States on May 24, 2026
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