WJF Technical Articles
The best option are Zero contact DPD Free Chlorine Reagent dispensers in the presence of water. A DPD dose can be dispensed within the test vial, with a one handed operation. We have found the Simple HF Scientific dispenser (featured below) to offer the best in terms of ease of use, protection from clogging and economical pricing.
There are many different variations of reagent for measuring Chlorine. Accurate testing is critical to make good decisions. The accuracy of most tests is not in question, but the convenience and ease of use makes a huge difference, whether you’re performing mobile field testing or site testing.
This guide explores different Chlorine Reagent options and suggests the best solution for your situation.
HF Scientific Powder Pop Dispenser are the best option for convenient chlorine testing. Easy to use both in the field and on-site. Small compact size makes it easier to carry in portable testing kits. Does not clog. Invert and one click to deliver the correct does of DPD reagent. Ready for shipping in Canada, call toll free now (877) 291 5572
| Feature | HF Scientific DPD Dispenser | Hach Swiftest™ Dispenser | Why? |
| Ease of Use | 5/5 | 4/5 | The compact size of the HF Scientific makes aiming and dispensing much easier. |
| Portability | 5/5 | 4/5 | The small size means the HF Scientific DPD Dispenser can easily fit within testing kits V’s the Bulky heavier Swiftest™. |
| Availability | 5/5 | 3.5/5 | Good selection of stock available for same-day shipping (100 test and 1000 test packs). |
| Pricing | 5/5 | 3/5 | Competitive pricing |
When comparing the Best DPD Reagent for Chlorine Testing, we took into consideration a combination of the following variables: **
“Best overall option based on convenience, value, ease of use and competitive pricing”
“Best individual DPD Chlorine Tests Option”
Compared with Pillow Packs:.
Even though the “Powder Pops” DPD Reagent single dose packets are not as convenient as the HF Scientific DPD Chlorine Reagent Dispenser, they are much easier to use than Pillow Packs. The packaging is more robust and easier to open without the need for scissors. They are also easier to pour directly into the neck of a testing cuvette. They are also much more durable than pillow packs.
The Hach Swiftest is a notable runner up to the HF Scientific Reagent Dispenser, but was marked lower due to the bulkier nature of the dispenser. We have also received customer feedback that the dispenser clogs over time but have not confirmed that through our own use. We have also found the HF Scientific DPD Dispenser to be more competitive on pricing.
We considered this option a little fiddly with the need to hold with one hand and turn a “crank” with the other. We are also concerned with a nozzle that extrudes, as it will wick water upwards, causing a blockage when DPD powder is ejected. The HF Scientific option we recommend has a concave nozzle which points inwards to greatly reduce the potential to get liquid within the DPD exit.
“Pillow Packs” are a mainstay within the Chlorine testing world. We do not recommend them due to the fiddly nature and the potential to make skin contact. Most customers prefer the DPD Dispenser. However we have included the Hanna Pillow Packs for your consideration as the best Pillow Pack option for those who still prefer them. A slightly larger size makes them easier to handle.
WJF Instrumentation Ltd.
#5 3610 – 29th Street N.E.
Calgary, Alberta
Canada
T1Y 5Z7
Calgary Head Office
Toll-Free: (877)291-5572
Standard: (403)291-5570
Ontario & Maritimes Sales:
(905)809-6918