sera pH-Test 15 ml, 0.5 fl.oz. Aquarium Test Kits
Original price was: $12.50.$8.50Current price is: $8.50.



Price: $12.50 - $8.50
(as of Oct 17, 2025 02:50:15 UTC – Details)
Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements. In case of too low pH values we recommend sera KH/pH-plus (in freshwater aquariums) or sera pond bio balance (in ponds), in case of too high values in freshwater aquariums we recommend sera pH/KH-minus or filtering through sera super peat.
Is Discontinued By Manufacturer : No
Product Dimensions : 1.57 x 3.54 x 5.51 inches; 2.24 ounces
Item model number : 4310
Date First Available : September 1, 2009
Manufacturer : Sera North America, Inc.
ASIN : B004HFVDWI
Best Sellers Rank: #158,856 in Pet Supplies (See Top 100 in Pet Supplies) #241 in Aquarium Test Kits
Customer Reviews: 4.6 4.6 out of 5 stars 1,256 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); } }); });
Easy to read
Very accurate
Makes it easy to monitor the pH value in fresh and marine water and ponds
Package Dimensions: 13.8 L x 4.2H x9.2W(centimeters)
Customers say
Customers find the pH test kit’s readability positive, with one mentioning it’s easier to read with the color card. The accuracy receives mixed feedback, with some considering it the most accurate liquid test kit.
11 reviews for sera pH-Test 15 ml, 0.5 fl.oz. Aquarium Test Kits
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Original price was: $12.50.$8.50Current price is: $8.50.
Phil S. –
Best I’ve used
This is the best ph test kit I’ve used. Does high and low range ph which I need as depending on the tank. Mine run between 5.5 to 8.3 ph. Easier to read with the color card and test tube design. Highly recommend.
Eskimo –
Great!
Great pH test kit.
Mark F. Hopkins –
easy to use PH test
I like this test for ease of use, and I trust that Sera is one of the better producers for our hobby. The results are easy enough to read, but the problem comes in when you try to compare the test tube color with the chart. This is of course a problem with other liquid test kits also.
D. Thao –
Better than API
My go to now. Has a bigger range reading and more consistent with multiple test. Was questioning api reading because fish was stress. Turned out ph was lower than what api was reading when compared to sera.
J –
Most accurate liquid pH kit I’ve used
Easily the most accurate liquid pH test kit I’ve used. Colors are easier to read than API and the reagent doesn’t stain as easily. Test tube is wonderful – you’ll find yourself more excited about that than the actual testing.Bonus: Reads a much lower and much higher point than API or other options on the market. This is especially handy for keeping dwarf freshwater shrimp.
Glenn –
not good enough for salt water reef tank
Accepted pH level in a basic, fish only saltwater system is between 7.6 and 8.4, but reef tanks are more sensitive, and need to be kept at the higher end of the pH scale, 8.0 to 8.4. This test kit has increments of .5 on the color reference chart. . Factors like lighting and opacity of the print chart vs and the translucent liquid in the vile means the human eye is also not sensitive enough to discern accurately between color on this chart and the color of the liquid. Meaning a reading of 8 could easy be as far as 1 or more pH off in ether direction. I bought this kit but will not use it with my reef tank.
Alfredo –
Ottimo prodotto
Robert Grajewski –
dependable test kit for aquarium, if tested side by side API wide range pH test kit both accurate
VC –
Great when wanting accurate Ph below 6.5
Jaime Dantas Guimarães –
Top
Pasdebol80 –
Précis