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Description
Tetra Ammonia NH3/NH4+ (Fresh & Salt Water Test) 25 StripsFast and easy testing of NH3 NH4+. Test water parameters Test strips Please dip test strip into the water Move the strip for approx. 5 sec Do not shake off excess liquid Keep the strip in horizontal position with test side up for 15 30 sec Compare test field with scale on tin
Fast and easy testing of NH3/NH4+.
- Test water parameters
- Test strips
Please dip test strip into the water
Move the strip for approx. 5 sec
Do not shake off excess liquid
Keep the strip in horizontal position with test side up for 15-30 sec
Compare test field with scale on tin
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- 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
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 4
Good and can be used in many dishes.
These are pretty good mussels they have not been smoked or anything added to it but mussels, water and salt. Since they are packed like that, you can use them in a variety of dishes.
I would buy them again but only when they're on sale because they are pricey.
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Reviewed in the United States on August 30, 2024
★★★★★ 5
Meaty and flavorful
I ate these straight from the tin at room temperature, sometimes sopping up the extra liquid with decent bread.
I purchased these because I wanted to try an alternative to the King Oscar. I've tried a couple different kinds of mackerel over the years, and while the King Oscar has been the best I find their olive oil varieties to be a bit acrid.
Not so with these Otter Kingdom fillets. Theses are actual fillets, so they are larger and meatier, and in my experience they have a looser grain than the mackerel I'm used to. They are high-quality, so I'm not detecting any bones and there's no formaldehyde-flavor, no imperfections in the cut. The oil is quite thin/watery and fairly small in volume. This isn't an issue for me, if anything I'd say it's welcome as it doesn't overpower the fish.
These make a great compliment to my tinned fish rotation, which includes tuna, squid/octopus, sardines, cod liver, oysters, and sometimes sprats, salmon, and trout. The price is better than King Oscar, so I can have it more regularly without feeling like I'm being immoderate.
Would recommend.
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Reviewed in the United States on November 4, 2024
★★★★★ 5
nice big chunks of mackerel
some of the highest quality mackerel I've had. taste is amazing, 10/10 stars
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Reviewed in the United States on October 14, 2025
★★★★★ 4
Excellent quality, but close to expiry date
I am basically repeating what another reviewer said in 2024, that the quality of these mackerel fillets is excellent except the expiry date of the case I received is only 6 months away, whereas similar products are shipping with expiry dates 4 years away. And my review comes 2 years after the one in 2024, so apparently this has not changed. Otherwise, I would definitely have given 5 stars. Regardless, I went ahead and ordered more, because that is how tasty they are and selling at a good price.
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Delicious, healthy lunches!
Really tasty mackerel. I concur with other reviewers, it's a healthy slab of fish I like to drop on a bed of crushed corn chips, fork-flake it and chow down. Better than just about any other off the shelf grocery store brand.
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Reviewed in the United States on September 28, 2025