pH TESTING METHODS

pH Testing

One of the most common water tests, pH is a measure of the acidity or basicity of the water. The pH scale is logarithmic, and runs from 0 to 14. 7.0 is considered neutral, with values less than 7 being acidic and those above 7 basic. The greatest concern with pH is how it affects the toxicity of many other substances, including nitrite and ammonia.

LaMotte pH Octet Comparator Test Kits
Each test kit consists of an Octet Comparator, graduated test tubes, and a bottle of indicator solution for 50 tests. LaMotte Company has been supplying laboratory quality pH indicator tests to professional analysts for more than eighty years; these are the most reliable, economical pH test kits available. Simply fill the tube to the mark with the sample water, add several drops of indicator, and compare the resulting color against the eight permanent color standards in the comparator.

How to Select the Right pH Kit: Single or Wide Range?
Single range kits cover a range of 1.4 pH units in 0.2 unit increments (0.1 unit sensitivity). Wide range kits may cover as many as 7 pH units in increments of 0.5 or 1.0 pH units (0.25 or 0.5 unit sensitivity).

Which Range?
Choose a kit in which the midpoint of the range covered is as close to the average or optimum pH value of the sample water. If this value is unknown, choose a wide range kit.
Indicators specific to a particular pH range allow colorimetric determination of pH. If the water to be tested is cloudy, one may wish to employ the bicolor reader.


		Octet Comparator Kits

	The Octet Comparator contains eight color standards with built-in filters which eliminate optical distortion. The color standards are arranged so that the sample can be compared to four standards at once.

LC Order №	pH Indicator	Octet Comparator Color Standard Values in pH Units								Hazard (Shipping Weight/lbs)	PRICE
2107/P-BCP	Bromcresol Purple	5.2	5.4	5.6	5.8	6.0	6.2	6.4	6.6	NH (1)	$35.00	QTY:
2108/P-CPR	Chlorophenol Red	5.4	5.6	5.8	6.0	6.2	6.4	6.6	6.8	NH (1)	$35.00	QTY:
2109/P-BTB	Bromthymol Blue	6.0	6.2	6.4	6.6	6.8	7.0	7.2	7.4	NH (1)	$35.00	QTY:
2110/P-PR	Phenol Red	6.8	7.0	7.2	7.4	7.6	7.8	8.0	8.2	NH (1)	$35.00	QTY:
2111/P-CR	Cresol Red	7.2	7.4	7.6	7.8	8.0	8.2	8.4	8.6	NH (1)	$35.00	QTY:
2112/P-TB	Thymol Blue	8.0	8.2	8.4	8.6	8.8	9.0	9.2	9.4	NH (1)	$35.00	QTY:
2113/P-ORB	Oleo Red B	8.6	8.8	9.0	9.2	9.4	9.6	9.8	10.0	N (1)	$35.00	QTY:
2114/P-LP	LaMotte Purple	9.8	10.0	10.2	10.4	10.6	10.8	11.0	11.2	NH (1)	$35.00	QTY:
2117/P-3100	Wide Range	3.0	4.0	5.0	6.0	7.0	8.0	9.0	10.0	N (1)	$35.00	QTY:
2118/P-3065	Wide Range	3.0	3.5	4.0	4.5	5.0	5.5	6.0	6.5	N (1)	$35.00	QTY:
2119/P-5085	Wide Range	5.0	5.5	6.0	6.5	7.0	7.5	8.0	8.5	N (1)	$35.00	QTY:
2120/P-5100	Wide Range	5.0	6.0	6.5	7.0	7.5	8.0	9.0	10.0	N (1)	$35.00	QTY:
2121/P-7105	Wide Range	7.0	7.5	8.0	8.5	9.0	9.5	10.0	10.5	N (1)	$35.00	QTY:
2123/P-1080	Acid Wide Range	1.0	2.0	3.0	4.0	5.0	6.0	7.0	8.0	N (1)	$35.00	QTY:
2124/P-8512	Alkaline Wide Range	8.5	9.0	9.5	10.0	10.5	11.0	11.5	12.0	N (1)	$35.00	QTY:
5858	Wide Range	2 Octet comparators - combines Code 2118 and Code 2121 from above								N (1)	$56.95	QTY:


	Replacement pH Reagents for above kits Comparator Kits

		All of the following Reagents are 30 mL Bottles

KIT #	Reagent #	Description	PRICE
2081-01	2218-G	Wide Range	$5.55	QTY:
	2212-G	Cresol Red	$5.35	QTY:
2107	2208-G	Bromcresol Purple	$5.45	QTY:
2108	2209-G	Chlorophenol Red	$5.10	QTY:
2109	2210-G	Bromthymol Blue	$5.25	QTY:
2110	2211-G	Phenol Red	$5.10	QTY:
2111	2212-G	Cresol Red	$5.35	QTY:
2112	2213-G	Thymol Blue	$5.35	QTY:
	2214-G	Oleo Red B	$8.40	QTY:
2114	2215-G	LaMotte Purple	$5.50	QTY:
2117	2218-G	Wide Range	$5.55	QTY:
2118	2218-G	Wide Range	$5.55	QTY:
2119	2218-G	Wide Range	$5.55	QTY:
2120	2218-G	Wide Range	$5.55	QTY:
2121	2218-G	Wide Range	$5.55	QTY:
2123	2302-G	Acid Wide Range	$6.50	QTY:
2124	2303-G	Alkaline Wide Range	$5.50	QTY:


	All Replacement Reagents are priced using a 30 mL Size. Larger sizes are available. Click HERE for larger bottle sizes available.

pH PLUS Direct Digital pH Meter™


	The pH PLUS DIRECT uses a microprocessor to put laboratory precision into a portable water-resistant design. Read pH, mV, temperature and concentration with accuracy. The pH PLUS DIRECT allows the analyst to use ISEs to read concentration in ppm. Memory for 25 test results. The microprocessor makes the unit easy to use in any test mode.

Specifications
pH:
Range:	0.00 to 14.00
Resolution:	0.01
Accuracy:	±0.002
Slope:	80 to 120%
Calibration:	3 point manual or automatic
Electrode:	Epoxy, Ag/AgCl

Temperature:
Range:	0.00 to 100.0°C
Resolution:	0.1°C
Accuracy:	±1°C
Concentration:
Range:	0.0000 to 19999
Resolution:	±0.1 LSD
Accuracy:	±0.5% or ±1 LSD

mV:
Range:	±1999.9
Accuracy:	±0.1 mV
Resolution:	0.1 mV
Inputs:	1 BNC, Temp probe, power, ref.
Power:	9V alkaline or line for 110 or 220V

Description

LC №

PRICE

pH Plus Direct Meter with pH and Temperature probes, , liquid buffers (4, 7, & 10) 120 mL size bottles, complete operating and technical manual with sturdy field case.

LCL-1936

$ 597.00


	Replacement PARTS, pH Solutions, Tablets, Other recommended Items , and helpful technical information for the above pH Plus Meter are available on our web site. CLICK HERE

Ion Specific Electrodes
Description	LC Order №	PRICE
Ammonia	5-0043	$310.80	QTY:
Fluoride	5-0048	$326.35	QTY:

How to Select the Right pH Kit: Single or Wide Range?Single range kits cover a range of 1.4 pH units in 0.2 unit increments (0.1 unit sensitivity). Wide range kits may cover as many as 7 pH units in increments of 0.5 or 1.0 pH units (0.25 or 0.5 unit sensitivity).

How to Select the Right pH Kit: Single or Wide Range?
Single range kits cover a range of 1.4 pH units in 0.2 unit increments (0.1 unit sensitivity). Wide range kits may cover as many as 7 pH units in increments of 0.5 or 1.0 pH units (0.25 or 0.5 unit sensitivity).