Taylor R-0004 phenol red #4 pH indicator solution in a 2 oz dropper bottleTaylor Phenol Red #4 pH Indicator Solution, 2 oz, R-0004-C-144 In stock$1399
Taylor R-0004 phenol red #4 pH indicator solution in a 2 oz dropper bottle

Taylor Phenol Red #4 pH Indicator Solution, 2 oz, R-0004-C-144

Ask a questionMPN R-0004-C-144
$1399
In stock

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Quick overview

  • Taylor reagent #4 The phenol red pH indicator, listed as R-0004.
  • 2 oz dropper bottle Supplied in the standard Taylor dropper bottle for drop counting.
  • Reads pH Phenol red is the indicator that gives the color scale a pH comparator reads against.
  • Refill, not a kit This is the reagent bottle on its own, for a Taylor kit you already own.
  • Replace yearly Taylor recommends refreshing reagents every year, since aged solution reads off and quietly sends your chemistry the wrong way.
  • Accurate pH is the foundation Chlorine effectiveness, scale and etching, and swimmer comfort all follow pH, so it is the reading worth getting right.
Full description and specifications ↓

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Product details

Taylor #4 is the phenol red pH indicator solution, supplied in a 2 oz dropper bottle. It is listed as R-0004-C-144 and referred to as R-0004, and it is the reagent refill for pH testing in Taylor pool test kits.

What it does

Phenol red is an indicator dye. Add the specified number of drops to a water sample and it develops a color that you read against the comparator block in your kit. The color tells you pH, which is the reading that governs almost everything else in the pool: how well chlorine works, whether the water scales or etches, and whether swimmers come out with stinging eyes.

Replace it every year

Reagents age. Light, heat and time all shift the chemistry inside the bottle, and old solution still returns a color, just not the right one. A reading you trust and should not is worse than no reading, so Taylor recommends refreshing reagents annually.

What this listing is

The 2 oz refill bottle only, for a Taylor kit you already own.

Specifications
Brand Taylor
Manufacturer part number R-0004-C-144
Also listed as R-0004
UPC 840036026779
Type pH indicator solution
Reagent Phenol red
Reagent number #4
Size 2 oz
Bottle Dropper bottle
Shipping weight 0.15 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

What is the part number?
It is listed as R-0004-C-144, and also referred to simply as R-0004. The -C denotes the 2 oz size.
What does phenol red test?
pH. It is the indicator that develops the color your comparator block is read against.
How often should I replace it?
Taylor recommends replacing reagents every year. Solution that has aged still produces a color, it just produces the wrong one, which is worse than no reading at all.
Is this a full test kit?
No. It is the 2 oz refill bottle of the #4 phenol red reagent for a Taylor kit you already have.
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