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Not sure of the differences between the different DPD numbers? No worries! A while back we posted a pretty good article called What is DPD? that should answer the majority of your questions.
Getting back on topic, though, we have started carrying DPD # 1 Test Tablets and DPD # 3 Test Tablets in the DPD Test Reagent section of our Pool Water Test Kit Store. At this time we carry the Pentair brand.
Additionally, on this site we carry the DPD #1, #3 and #4 ReagentStrips in our Water Test Kit Store.
At this time we carry 100 packs of DPD-1, DPD-3 and DPD-4 in the Water Testing Blog Test Kit Store.
Differences between DPD-1, 3 and 4?
For the answer to that question, we suggest that you take a look back at one of our earlier postings called What is DPD?. Not to brag, but we think that article does a decent job of answering the question.
To sum things up, though, below you will find the most common uses for DPD-1, DPD-3 and DPD-4:
So, before purchasing DPD, you may want to verify the type of chlorine testing that you will need to do — else run the risk of accidentally purchasing the incorrect DPD reagent(s)!
Where to purchase DPD?
As we stated earlier, you can purchase 100-packs of DPD-1, DPD-3 and DPD-4 from our Water Test Kit Store.
As for where to find other forms of DPD reagents, at this time we know of places to purchase two other forms of DPD: tablets and powder.
Need a new meter to test chlorine levels, too? We suggest looking at the eXact Chlorine Photometer available on the FilterWater.Com web site. It offers the reliability of DPD-based chlorine testing and the convenience of not having to match colors against a color chart.
Want accurate chlorine test results but don’t want to deal with DPD reagents and meters? Take a look at the SenSafe Free Chlorine water Check product currently available in our Water Test Kit Store. It bears USEPA Approval for use in municipal water testing and offers superior resistance to monochloramine interference that can sometimes affect the results obtained when testing for free chlorine residual using DPD test reagents.
With that in mind, please excuse our departure from the normal subject matter and indulge us as we answer a question about purchasing DPD test tablets for chlorine testing in Zambia, an African Nation.
“Robert K” asked…
I need to know if there is company in Zambia or Sub-sahara Africa selling DPD #1 tablets.
This is a very informative site, keep it up
Thank you, Robert, for contacting Water Testing Blog with this question. We don’t know a whole lot about companies doing business with other areas of the world such as Zambia, but we did find a few links that may prove useful information.
Sorry we cannot provide more assistance than we have, but we do hope one of the links above will point you in a useful direction.
For those interested in learning more about DPD and its uses, please check out an earlier posting entitled What is DPD?.
If you would like to purchase DPD from a retailer/distributor in the US, the following links will take you to a site where you can order DPD #1 and/or DPD #3 in packs of 100 and packs of 1,000.