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Description
JBL Ammonia Ammonium Test NH4 RefillSimple and reliable monitoring of the aquarium pond water values. Checks the biological balance (bacterial activity) in freshwater and marine water Laboratory comparator system to compensate any inherent water colouring: fill glass vials with sample water, add reagents to another vial, place vials in holder, read values on colour chart When to use: for setting up a new freshwater aquarium: once a day. Initial setup with marine water: once a week. For
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Simple and reliable monitoring of the aquarium/pond water values. Checks the biological balance (bacterial activity) in freshwater and marine water
-
Laboratory comparator system to compensate any inherent water colouring: fill glass vials with sample water, add reagents to another vial, place vials in holder, read values on colour chart
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When to use: for setting up a new freshwater aquarium: once a day. Initial setup with marine water: once a week. For use in case of fish diseases or fish deaths
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Online Laboratory: free analysis and recommendations for the water values you have measured
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Package contents: 1 quick test, Ammonium Test NH4. Contents for approx. 50 measurements. Incl. 3 reagents, 2 glass vials with screw cap, syringe, comparator block and colour scale. Refill reagents available separately
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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
4.0 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Incredibly comfortable and perfect for summer!
Color: Pattern Leopard, Size: X-Large, Color: Pattern Leopard, Size: X-Large
I have to admit, I was a little skeptical about these pants at first. When I initially opened them, they didn’t feel like they had much stretch, and the fabric felt a bit cheap to the touch.
However, once I actually put them on, my opinion completely changed! They are so incredibly comfortable and have a great, effortless drape. The material is lightweight and breathable, making them absolutely perfect for warm summer days. They are easy to style (looked great paired with a simple tank and a denim jacket!) and feel wonderful to move around in.
I am so glad I gave them a chance—I would definitely purchase these again!
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Reviewed in the United States on May 23, 2026
★★★★★ 4
Cute and comfortable
Color: Pattern Leopard, Size: Medium
Comfortable and cute. A little long but still wear them with no issues. The material is light but synthetic so not really breathable. I foresee wearing them often.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Love these shirts
Size: Small, Color: Watermelon, Number of Items: 1
Love the fabric. They feel so much better than some of the other shirts I have. They’re thicker and just feel nicer. Love this color too. Got a small and also have another color in medium. Both fit, just depends on how casual I want to look. I’ll be getting more!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Nice Quality for the Price
Size: Large, Color: White, Number of Items: 1
I ordered a large and it was a little too big. I washed and dried it and it didn't shrink too much. It's very soft and feels nice. For the price it's better quality than expected. I am planning to order a medium which should be the right size. The large fits my husband perfectly.
F/5'11"/165lbs M/6'/170
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Soft, Relaxed Fit Tee That Gets Better with Every Wash
Size: Medium, Color: Black, Number of Items: 1
I ordered the Comfort Colors Adult Heavyweight Short Sleeve tee and it honestly lives up to the name. The fabric has that thicker, broken-in feel right out of the package. It is soft without feeling thin or flimsy, and it has that slightly faded, lived-in look that Comfort Colors is known for.
The fit is relaxed but not sloppy. It hangs nicely without clinging, and the heavyweight cotton gives it structure. It feels durable and well made, especially around the collar and seams. After washing, it softened even more but didn’t shrink much or lose its shape.
What I like most is how versatile it is. It works for casual days, layering, or even as a simple everyday staple. The colors also tend to have that washed, vintage vibe rather than looking overly bright or synthetic.
Overall, this is a dependable, comfortable T-shirt that feels like it will last. If you like a slightly heavier cotton with a relaxed fit, this one is a solid choice.
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Reviewed in the United States on February 19, 2026