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Borate Dose Calculation Charts for pools

Borate Dose Calculation Charts for pools

Posted by proserve No Comments
Borate Changes to pH, Total Alkalinity, TDS and Acid to Neutralize per 10,000 gallons
 

 

 

 

Product

 

Oz of

Product per

1.0 ppm Increase

 

Oz of

Product per 50 ppm

Increase

 

Pool Water Starting pH

 

Pool Water pH

After

addition

 

 

Pool Water pH Increase

 

Pool Water Starting

Alk, ppm

 

Pool Water Alk after addition,

ppm

 

Pool Water Alk

Change,

ppm

 

Oz of Product Needed to Raise Alk by

1.0 ppm

 

Muriatic Acid Needed to Lower pH to

7.5 fl oz

 

Muriatic Dose

fl oz per oz

of product

 

Pool Water New Alk after Acid Addition

 

TDS Increase from 50

ppm Borate

Dose, ppm

 

TDS Increase from Muriatic Acid Dose,

ppm

 

Total TDS Increase from Acid and

Borate, ppm

Sodium Tetraborate Pentahydrate Na2B4O7•5H2O (STB) 9.003 450.168 7.5 8.967 1.467 90 202.8 112.8 4.0 282.232 1.595 95.4 338.8 82.2 421.0
Sodium tetraborate Decahydrate Na2B4O7•10H2O (Borax)  

11.785

 

589.267

 

7.5

 

8.967

 

1.467

 

90

 

202.8

 

112.8

 

5.2

 

282.232

 

2.087

 

95.4

 

338.8

 

82.2

 

421.0

Disodium Octaborate Tetrahydrate Na2B8O13•4H2O (DOT) 6.354 317.719 7.5 8.536 1.036 90 148.1 58.1 5.5 138.687 2.291 95.3 311.6 42.4 354.0
Boric acid

H3BO3 or B(OH)3

 

7.640

 

382.000

 

7.5

 

7.3

 

-0.2

 

90

 

84.4

 

0.0

 

n/a

 

n/a

 

n/a

 

n/a

 

0

 

0

 

0

 

Borate Dose Calculation
 

To determine borate dose

Dose Amt per 1 ppm  

×

Pool Gallons/ 10,000  

×

 

ppm

 

=

Borate Dose oz  

oz / lb

Borate Dose lbs  

lbs

Example 16,500 gallon STB 9.003 × 16,500/10,000 × 50 = 742.75 ÷ 16 = 46.42 lbs
Example 16,500 gallon, Borax 11.785 × 16,500/10,000 × 50 = 972.26 ÷ 16 = 60.77 lbs
Example 16,500 gallon, DOT 6.354 × 16,500/10,000 × 50 = 524.21 ÷ 16 = 32.76 lbs
Example 16,500 gallon, Boric Acid 7.640 × 16,500/10,000 × 50 = 630.30 ÷ 16 = 39.39 lbs

 

© Copyright 2019 Lowry Consulting Group, LLC

Muriatic Acid Dose Calculation to Neutralize (Bring pH and Total Alkalinity to Starting)
 

To determine Muriatic dose

Borate

Dose oz

÷ Muriatic Dose Amt

from above

Muriatic Acid Dose

Amt oz

 

fl oz/gal

Muriatic Acid Dose Amt

gallons

Example 742.75 oz STB 742.75 ÷ 1.595 = 465.67 oz ÷ 128 = 3.64 gallons
Example 972.26 oz Borax 972.26 ÷ 2.087 = 465.86 oz ÷ 128 = 3.64 gallons
Example 630.30 oz DOT 524.21 ÷ 2.291 = 228.8 oz ÷ 128 = 1.79 gallons

 

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