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Thread: Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

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    Join Date
    Jun 2015
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    Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

    I read here on a posting someone suggested using 1 less drop of indicator to get a better color comparison.

    I started doing that and I am finding using 1 less drop of R0004 indicator during the pH test, I get a much better idea of color match, seems that the color intensity is less and matches the comparator color.

    Is this OK to test this way or not?...I just did another pH test used 4 drops, color matched at 7.4, added the 5th drop still 7.4 but color was more intense and harder to match (I am using the comparator that came with the K2006 kit filled to the 25mL mark)
    Valley of the Sun, Arizona.....10k gunite/pebble (Re-surface March 2015) w/in floor Caretaker 99 cleaning heads -- Pentair FNS 60 DE filter -- Pentair IntelliFlo Variable Speed for pool -- Pentair Wisperflo 1 HP for boulder waterfall...Taylor K-2006 & Taylor K-2006C kits

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    Mason, Ohio
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    Re: Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

    I'm pretty sure that it was Chemgeek that suggested this - in which case it is safe to say it must totally be OK to test this way.
    34K gal IG, 37'x40' lagoon, vinyl, Pentair IntelliFlo VS Pump, 500# Hayward sand filter, Jandy SWG, Raypac heat pump, 4 deck jets, Hayward Super Pump + deck fountain, Dolphin Oasis Z5

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    epro05's Avatar
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    Re: Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

    It's OK. I do the same thing (4 drops)
    27,500 gallon in ground gunite/plaster (1995). Attached Spa with fountain, spillway, and 2 lion heads streaming into the pool. Hayward pump and AO Smith UST1152 1.5 hp motor (single speed). Hayward 60 sq ft DE Filter (Model DE-6000). Kreepy Krauly cleaner.

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    borjis's Avatar
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    Re: Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

    I'm going to try that today.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    JoyfulNoise's Avatar
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    Re: Using 1 less drop of pH indicator R0004 for the pH test....OK or not?

    It is ok because the color is established by the pH and the number of drops simply affects the intensity of the specific color (some refer to it as saturation but I'm not sure that's the correct term, perhaps some camera buffs can illuminate). Anyway, 4 drops will work just fine.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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