DIY reagent advice, malonic acid for Hanna Nitrate HR

[Breadman03]

Due to the Hanna packet shortage, I decided to try making a DIY version. The Hanna reagent contains malonic acid, I assume a dye, and quite possibly other things. I found a source for the malonic acid and it looks like it could be pretty inexpensive, but where do I start for the other ingredients?

Does anyone here have an idea on what this non-chemist could look into? Thanks for any help

And yes, I know the packets work great and aren’t terribly expensive. This is mostly for curiosity.

 

[FishyFishFish]

Go here and search for 782

Hanna Instruments SDS Search

sds.hannainst.com

 

[Malcontent]

This is a nitrate zinc reduction test by another manufacturer. Same wavelength and sample volume. It might be possible to use them and just create your own absorbance curve. Or just poach some of the ingredients.

LOV-502810

Lovibond® Nitrate Test Tablet, 100 ct.

www.novatech-usa.com

Lovibond® Nitrite LR Tablets (pack of 100)

Lovibond® Nitrite LR Tablets (pack of 100)Test tablets are manufactured in Germany under tightly controlled conditions on the latest machinery. Maintaining the highest quality standards permits Tintometer GmbH to guarantee our reagent tablets for a minimum of 5 years, and some for as long as 10...

www.novatech-usa.com

This is the zinc powder:

LOV-465230

Lovibond® Nitrate Test Powder, 15 g

www.novatech-usa.com

You can also examine their SDS for different formulation ideas:

https://www.lovibond.com/ix_pim_assets/Wasseranalytik/SDS/00512311/00512311_Nitrite_LR_(GB).pdf

https://www.lovibond.com/ix_pim_assets/Wasseranalytik/SDS/465230/465230_Nitrate_Test_Powder_(GB).pdf

https://www.lovibond.com/ix_pim_assets/Wasseranalytik/SDS/00512811/00512811_Nitrate_Test_(GB).pdf

Alternatively, contact them and see if they're interested in producing compatible reagents. They make a lot of reagents designed to work with other manufacturers' devices that are more affordable.

 

[Randy Holmes-Farley]

This sounds like a huge project to me if you do not know the concentrations or even the identity of all of the ingredients.

 

[Malcontent]

This appears to be the test method used.

 

[Chrisv.]

It’s stunning that they released this with no reagents available…

 

[Shadows Reef]

dang, well that sucks, definitely glad I ordered extra reagents when I first got my checker but following to see what turns out of this though, best of luck!

 

[Breadman03]

This sounds like a huge project to me if you do not know the concentrations or even the identity of all of the ingredients.

I’m hoping not, but I’m sure that you’re correct.

 

[Malcontent]

More recent paper documenting the method.

 

[Malcontent]

 

[Chrisv.]

Saltwaterfish.com has them in stock!!

 

[Billldg]

No need, SaltwaterAquarium have the regents now, BUT, they are going fast!!!

 

[Chrisv.]

Oops. My mistake! Aquarium, not fish! 102 packets left!

 

[Malcontent]

I guess the big question is whether there will be another shortage or if they'll be able to keep up with demand now.

 

[Chrisv.]

Honestly I'd love a diy version either way.i love the diy aspects of this hobby. It's a hobby within a hobby. Hobby-ception!

 

[Breadman03]

No need, SaltwaterAquarium have the regents now, BUT, they are going fast!!!

I snagged 2x25 packs earlier today

 

[Malcontent]

Honestly I'd love a diy version either way.i love the diy aspects of this hobby. It's a hobby within a hobby. Hobby-ception!

Alright, I ordered a Checker and two packs of reagents.

I'm going to give the papers a more thorough reading, do a bit more research, and begin sourcing all the ingredients.

 

[Breadman03]

Alright, I ordered a Checker and two packs of reagents.

I'm going to give the papers a more thorough reading, do a bit more research, and begin sourcing all the ingredients.

Feel free to document it here, if you'd like.

 

[Malcontent]

Alright, this is what I have so far:

* Restricted but obtainable without too much trouble
** Restricted and kind of a PITA to obtain w/o a lot of effort

v1 = first attempt at DIY reagents.

The method documented in the paper results in a yellow-orange-red product whereas Hanna gives a clear-pink-purple product.

I'll begin ordering ingredients over the next few days.

 

[Gogo007]

Alright, this is what I have so far:

* Restricted but obtainable without too much trouble
** Restricted and kind of a PITA to obtain w/o a lot of effort

v1 = first attempt at DIY reagents.

The method documented in the paper results in a yellow-orange-red product whereas Hanna gives a clear-pink-purple product.

I'll begin ordering ingredients over the next few days.

Do you have any update ? Does it works ?