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7/27/2019 Aquachek the history of test strips
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History of Test StripsLate 1950
s first modern test strip used todetect glucose in urine (urinalysis)Early 1960
s development of strips for serum and blood analysisToday test strips are the most frequentlyused test method for blood glucose testing
and urinalysis Ames division of Miles - other applicationsfor test strips, including pool and spa stripsdeveloped in early 1980
s
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Test Strip Technology isnot unique to the Pool
and Spa IndustryMedical
Food Quality Aquarium Agricultural
Automotive
Water QualityForensicsMetallurgy
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Why Test Strips?
Many same chemicalreactions as liquid kits
ConvenienceFaster More TestsEasier
AccuracyEconomical
Save Time and Money
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How We See Color
Several HUES with varying saturation.Varying Value (Lightness).
Changes in hue are easier to distinguish!
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Reacting Pads consist of:
- Absorbent pad for sample uptake- Chemicals for color reactions- Chemicals for long shelf life- Chemicals for long use life
Test Strip consists of:- Plastic handle- Reacting Pads
pH
This test Strip measures all of the following parameters witha simple dip, remove and notethe resulting color.
Total Dissolved Solids
Cyanuric Acid
Total Alkalinity
Free Chlorine
Total Chlorine
Total Hardness
Test Strips for Pool Water Analysis- A close look
Convenience
Test strips are far more scientific than most people
realize, but we take care of the science for you.
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Convenience
Most tests completed in 15 to 45seconds.
As many as 7 different tests can beincluded on one test strip
Anyone can use test strips
Small container size to store andtransportNo mess - no clean up
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Test Strip
Directions:Dip strips into the water for onesecond, remove. Hold strip levelfor 15 seconds. Compare pad tocolor chart.
0
1 5
3 0
5 0
L o w
G o o
d
Simple activation and use. To use, we dip the strip and match reacted colors toreference blocks ...
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ACCURACY
Test strips can be as accurate as anyother testing method
Independence of user technique makestest strips accurate for wide range of users
General rule of thumb concerningaccuracy for test strips - accurate towithin 1/2 color block
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ACCURACY/PRECISION
Test strips require color distinction betweenreference color blocks that is obvious to auser with normal color acuity. This means thatall of the concentration increments availablewith other methods are not practical for visually read strips
Color Blocks developed at critical levels toallow the user to make meaningful decisionson treatment options
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Ensure Accuracy
Ideal storage conditions - low humidityat room temperature
40 C ( 104 F ) at least 6 to 8 weeks50
C ( 122
F ) at least 4 to 5 weeksCap tightly sealed with desiccant in bottle
Handle strips with dry fingersFollow directions precisely
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Evidence of AccuracyonBalance Research Study Summarized inService Industry News
1000 Pools in the Arizona and Southern CaliforniaareaTest strips compared to liquids and both comparedto ASTM lab methodsTest strips were found to be as accurate as liquids,and in some cases even better Quotes from the SIN article:
Test strips were
quick to use, easy to use and easy toteach someone to use
Based on Research results, onBalance reports that theyhave begun purchasing test strips for their firms use
Not all strips are equal
an ongoing problem with crosscontamination from pad to pad
with Test Strip B.
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Evidence of Accuracy
A comparison of ion chromatography, acolorimetric assay and a test kit for measuring the nitrate content of well water showed that, despite considerabledifferences among methods, results weregenerally in good agreement. Inexpensive,easy to use test strips offer a definiteadvantage when analysis facilities and/or time are limited.
Department of Food Science and Agronomy, PurdueUniversity
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Economical
Multiple parameter test strips will costabout as much as all replacement
reagents needed to do the same testsHuge savings in time and thereforemoney
New users require little or no training touse the test strips
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Test Strips Available
Free and Total ChlorineBromineBiguanideMonopersulfateCyanuric AcidpHTotal AlkalinitySaltHigh Range FreeChlorine
HardnessIron
Copper NitrateNitriteTotal Dissolved Solids
(TDS)BorateHydrogen Peroxide
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AquaChek Professional
Service KitTest 16 Chemistrieswith one kit
Save valuable timein testingMeets regulatoryrequirements FASDPDWaterproof treatment guide
Special Price
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Frequently Asked
QuestionsTemperature differenceExpiration datesDifferent results with liquid kit and teststrips - FACTS
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AquaChek Pool and Spa
StripsQuick test
Accurate
Easy to use
Convenient for serviceand pool owner
Double check other testing methods