A titration endpoint and a printed color scale have different workflows and limits.
Chlorine readout
0.2 or 0.5 ppm per drop, sample-dependent
0.2 or 0.5 ppm per drop, sample-dependent
0.5, 1, 2, 3 and 5 ppm scale
A drop-count increment is not the same as a color-scale range or an accuracy guarantee.
Water balance
pH, TA, CH and CYA
pH, TA, CH and CYA
pH and TA; no CH or CYA
CYA informs chlorine targets; CH matters to surface and equipment requirements.
Salt test
Not included
Included · drop test
Not included
A separate measurement helps investigate a generator warning.
Supply
0.75 fl oz; larger variant available
0.75 fl oz
DPD reagents; separate CH/CYA tests needed
Plan for the correct replacement reagents and any missing tests.
A full water-care routine
Taylor K-2006
Our starting choice here for the readings used by the water-balance tools.
Chlorine method
FAS-DPD titration
Chlorine readout
0.2 or 0.5 ppm per drop, sample-dependent
Water balance
pH, TA, CH and CYA
Salt test
Not included
Supply
0.75 fl oz; larger variant available
A good fit if
Owners who want separate free and combined chlorine readings plus the principal water-balance tests.
Look elsewhere if
You need salt measurement in the same case or want a digital readout instead of manual testing.
Ownership considerations. Replace individual reagents as directed; frequent testing may justify the larger-bottle K-2006C variant.
Select English instructions and the intended bottle size on the destination page. FAS-DPD increment depends on sample size; use the supplied procedure.
Write down the inputs your maintenance routine uses before comparing products. Our water-balance tool uses FC, pH, TA, CH and CYA, with salt added for saltwater chlorination. A kit that cannot provide those measurements requires another testing method; it should not encourage you to guess a missing number.
The K-2006 covers the core water-balance parameters. The K-2006-SALT adds a salt test. The K-1004 is deliberately narrower. It makes sense only when the omitted measurements are available elsewhere and its chlorine range fits the intended task.
Understand the chlorine method.
FAS-DPD testing uses a titration endpoint; DPD comparator testing relies on matching a color. Both require the right sample and procedure. A small change in sample size can change how a drop count translates into ppm, so use the instructions for the exact kit rather than a remembered rule from a different test.
For elevated-chlorine treatment monitoring, inspect the supported range before buying. Do not assume that a very dark or unexpectedly pale result is a valid reading beyond the method’s range. Interferences and limits belong in the decision, especially if you use non-chlorine oxidizers.
Taylor’s published test descriptions list sample-dependent chlorine increments. The K-2006 family lists a CYA scale of 30–100 ppm; do not present a below-scale reading as an exact zero. Consult the procedure supplied with your current kit for the actual test. We have not performed comparative precision testing.
Saltwater pools still need chlorine tests.
A salt chlorine generator makes chlorine; it does not remove the need to measure it. Its display is also not a substitute for every independent water test. When buying from scratch, an integrated salt kit is convenient. If you already have a good complete kit, compare a standalone salt test before paying to duplicate every reagent.
Use the salt calculator only after confirming the water volume, current reading and generator-specific target. A warning on the generator alone is not enough information to decide how many bags to add.
The continuing cost is in the consumables.
List the reagent codes, replacement availability and storage instructions. Frequent CYA checks and frequent chlorine titrations do not consume identical supplies. A larger-bottle variant may be useful for a busy testing routine, but buying more than you can store and use properly is not automatically better value.
Keep the kit away from conditions excluded by its instructions. Do not substitute a similar-looking bottle or mix remaining reagents to make a refill last longer. Good sample technique and fresh, correct reagents matter more than a case full of accessories.
A test result does not automatically mean a purchase. Retest an unexpected reading and check the method before choosing a treatment. When an addition is warranted, our chemical buying guide helps match the ingredient and strength to the calculation.
A few things worth knowing
Your questions, answered.
Which kit is the starting recommendation?+
Within this shortlist, Taylor K-2006 is the starting choice for a full water-balance routine without salt testing. K-2006-SALT adds a sodium-chloride test. K-1004 is a narrower option and does not supply CYA or calcium hardness readings.
Why compare only Taylor kits?+
This first comparison focuses on three documented configurations with clear differences in measured parameters and chlorine method. It is not an exhaustive ranking of all brands, and it does not establish that Taylor is universally better than alternatives.
Can I use K-1004 for all seven calculators?+
No. It does not measure CYA, calcium hardness or salt. You need suitable separate measurements for tools that use those inputs. A pool volume calculator uses dimensions instead of a water test.
Is the advertised test count enough to compare kits?+
No. Count the specific parameters you need and inspect the method and range. Free, combined and total chlorine may be counted separately even though that does not add CYA or calcium hardness capability.
What should I check before monitoring high chlorine?+
Read the exact procedure, supported range, sample volume and interference notes. Do not extrapolate a color scale beyond its highest mark. A method appropriate for routine checks may be unsuitable for elevated treatment levels.
Do larger reagent bottles make a test more accurate?+
Not by themselves. They primarily change the supply available for repeated tests. Accuracy still depends on the method, reagent condition, sample handling and following the procedure. Select the intended kit variant and replace the correct reagent codes.
Check the source material
These pages supplied the listed specifications. Our fit recommendations are editorial judgments, not manufacturer endorsements. Confirm your exact model, package and local support before purchasing.