Seachem MultiTest Copper Test Kit
$17.99
Price: $17.99
(as of Oct 18, 2025 11:39:51 UTC – Details)
This kit measures all types of copper to less than 0.01 mg/L in marine or freshwater. It uses a highly sensitive catalysis based procedure. MultiTest™: Copper performs over 75 tests and contains a reference sample for validation. Range: 0–0.80 mg/L. Precision: 0.025mg/L & 0.0025 mg/L.
Is Discontinued By Manufacturer : No
Item model number : 116031707
Date First Available : June 15, 2004
Manufacturer : Seachem Laboratories, Inc.
ASIN : B0002A5XGO
Best Sellers Rank: #52,666 in Pet Supplies (See Top 100 in Pet Supplies) #473 in Aquarium Water Treatments
Customer Reviews: 4.0 4.0 out of 5 stars 447 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
75 test
Fresh or saltwater use
Unique indicator
Customers say
Customers find the copper test kit to be a fantastic Seachem product that provides peace of mind. However, the functionality and accuracy receive mixed feedback – while some say it works as described and is accurate, others report inaccurate results and note it doesn’t provide 75 tests. The ease of use is also mixed, with some finding it very easy to use while others find it complicated. Moreover, the color accuracy is problematic as it’s impossible to read the colors accurately, and the powder capacity is insufficient, with customers noting there’s not nearly enough powdered reagent. The value for money receives mixed opinions, with some finding it inexpensive while others consider it a waste of money.
AHans –
You need to be really simple about it
This test kit works awesome. I was really skeptical about the effectiveness of this test kit in conjunction with Cupramine copper treatment, after reading lots of mixed reviews about the overall quality of the test, misleading amount of tests in the kit, etc. After performing 2 tests with the kit, I couldn’t be more happy with both the results and the quality of the kit. I am treating a 10 gallon saltwater tank, and I used Cupramine at the recommended dose, following the instructions on the bottle EXCEPT I dosed the 2nd half of the Cupramine only 24 hours later, contrary to the directions to dose the 2nd half 48 hours later (I was losing fish rapidly, it was an emergency situation). This had no negative effects on my 5 suriving fish whatsoever (4 Chromis’s, 1 Clownfish). The following day after performing the final dose, I could literally see the white spots falling off my Clownfish. This was indicating to me that the copper treatment was literally forcing the parasites out of the fish, killing them all off the in the final stage of their life cycle. A few days later, all of my fish have been extremely healthy and well, no white spots to be found. I cant wait until my display tank has gone fallow long enough so I can put the fish back in their true home!Notes about the test kit: You really need to keep it simple. Lots of people in the reviews say how theres no way there are the amount of tests in the kit that they advertise. I disagree. The test kit 100% does include enough materials to perform at least 50+ Copper tests (who even needs to test copper that much?). You need to follow the instructions CAREFULLY but at the same time DON’T OVERTHINK IT. I found that leaving the test sit for 15-20 minutes gave me the best results (you’ll understand once you buy it). The 2nd picture is the 2nd test after I added 5 more drops Cupramine to my 10 gallon, achieving the final goal of 0.5mg/L of copper10/10, I would buy it again if I ever needed it
Bectile –
Necessary for anyone using a copper based fish medication
This test kit is a must-have when medicating with a copper-based medication. It is especially useful when using copper to eradicate a pond snail infestation with their Cupramine product. With this kit you can make sure the copper levels are high enough to kill the snails, but not dangerously high for the fish and plants in the tank. It’s a little complicated to perform, and I would deduct half a star if I could for not having a clear line on the pipette to show exactly how much water to test. Also, coating the little stir stick with the powder and having to wipe it off after each mixing seems imprecise to me. I do think the color scale with the windowed sleeve helps for evaluating the color results. You can test six different samples at a time, which is nice for comparisons.
Mike –
Good test kit, a bit tricky to use
When it comes to copper test kits, there are not too many choices out there. The Seachem copper test kit is a well designed, well packaged kit that yields accurate results.Included with the kit is a plastic well where the water and reagents are mixed, 2 reagents, a pipette (dropper), a mixing stick, a color guide and a reference sample.Many people have complained about this kit but you must take these comments with a grain of salt. Seachem has created a test kit that is priced for the consumer and at that price we cannot expect it to as sophisticated as a lab quality test, that said I think it works very well.The general steps of performing a test with this kit is to fill 2 pipettes with aquarium water and drip them into a slot on the plastic well. This part is very easy. Next you put 2 drops of Reagent 1 into the well, also very easy. The next part can be a little confusing. Reagent 2 is a powder that comes in a small capped container. The instructions say to open the container and using the mixing stick coat the stick with powder and mix it into the well. At first glance you will think you don’t have enough reagent (powder) in the container as it’s impossible to coat the mixing stick, especially if you think you will be performing multiple tests. I called the company and they said it takes only a few granules of the powder to perform the test so all you really need to do is dip the stick in, twist it once or twice and you’ll pick up enough granules. Next you mix the granules into the well and wait a few minutes.Several minutes later the well will start to turn blue depending upon how much copper is in your water.For those that think the test is not working (like me the first time) Seachem has included a reference sample. If you perform the test as I described above using the reference sample, you will find that the copper reading will be 0.5ml/L.I’ve said it above but I’ll say it again, it’s a good test kit. Don’t be scared away from the bad reviews.
Moose –
Great Product.
Daniel –
Excelente, medicamento.Quito los parásitos en poco tiempo.Hay que tener cuidado con la dosis, pero muy bueno.
CK –
Needed to get a few copper tests done on my aquariums once again as I do quarterly benchmarks my tanks for various water parameters. Since my previous kit was compete I grabbed another kit, this kit.I’ve used many different brands for various test kits to measure everything that can be measured for aquariums however I always come back to Seachem as one of my trusted brands because I know the result will be accurate. Another big thing for me is that this test kit is easy to read. Some other brands of test kits have difficult colors to gauge the slight shade difference however I find the blue hue with this kit makes it easy to read (i’m not alone with this). The included sliding window which you can train your eye on a specific color shade is a plus as well. I wish all brands had this type of color window slider no matter what is being tested (nitrate, phosphate, etc. etc.)This test kit is extremely easy to use. I’d first suggest to use the given benchmark liquid and test that. The manufacturer does not say it needs to be done but as a rule I always verify things first. So….first verify that the test is working properly it also serves a 2nd purpose which I state below. After that, measure your aquarium samples as you wish.Easy PeasyTO BENCHMARK:- For a benchmark test grab the white test tray (has the 6 different little liquid cup holders) and fill almost to the top one of the cups with the ‘Copper Reference’ solution. They say to do x2 of the small clear plastic pipette to fill the tray however â fill almost to the top â does the same thing. Don’t fill the cup so much that it will leak out of that individual cup holder. Just make the solution basically level with the top of the cup.- Add 3 drops of liquid from the bottle marked ‘Copper 2’. (make sure 3 drops)- Last step is to get a LIGHT COATING of the white powder on the plastic stir stick from the small clear plastic vile. This vile is not marked however it is the one that has the powder. TAP the stir stick in the vile to remove any excess. (Iâll give a tip below) Now use that same stir stick that has the little bit of white powder to stir the reference solution. Stir for a few seconds to mix the powder and liquid together well.Now just sit back and wait. They say for non-chelated wait aprox 4 minutes and read. For chelated wait for aprox 15 – 25 minutes. In my own usage 4 minutes and 15 minutes has always worked just fine.Finally hold the sliding color window close to the white plastic cup that has our test liquid. Slide the window back and forth until you get that perfect match…it will now line up over 0.5 ppm. Done and done!The reference liquid will always give you a 0.5 ppm reading. Again Seachem does not say this needs to be done to use this test however I always teach people to do this as a first step because it trains our eye how to read the color properly. We know it is 0.5 ppm so we can match up the color easily…and in turn our own sample tests we can better gauge color I feel.TO TEST YOUR SAMPLE:Steps are similar to benchmarking.- fill one of the cup holders nearly full of the aquarium water you want to test- add 2 drops of liquid from the ‘Copper 2’ bottle (make sure 2 drops)- get a LIGHT COATING of the white powder on the plastic stir stick from the small clear plastic vile. TAP the stir stick in the vile to remove any excess. Now use that same stir stick that has the little bit of white powder to stir the reference solution. Stir for a few seconds to mix the powder and liquid together well.Now same as previous, sit and wait. 4 minutes for non-chelated and 15-25 minutes for chelated.TIP: The tip for the white powder is that a LIGHT COATING is needed only. It is a coating on the stir stickâ¦the stir stick is not used as a spoon. I find people overload the stir stick with wayyy to much product. If people run out of the powder this is the reason, Iâve seen people do this countless times. I’ve never run out of the powder before the solutions.TIP: One final tip, the blue hue solution can stain the white 6 pack cup holder so I’d suggest to wash it out after each use than letting the solution dry in the cup.I will say if anyone has a question about this just let me know, I’m more than willing to help you out with the kit.An honest review from a dedicated aquarist
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Gianluca –
Il test acquistato non mi ha soddisfatto, è indicato per effettuare 75 test, ma il reagente numero due fornito in polvere è veramente in quantità insufficiente nonostante si seguano le indicazioni in maniera rigida. Inoltre la lettura rispetto alla scala risulta essere difficoltosa. Rapporto qualità prezzo pessimo. Non ho effettuato il reso solo perché ho aperto il reagente liquido, ma avrei restituito il prodotto volentieri.