Ghl kh director diy reagent

[paul01609]

Hi guys looking in to purchasing a ghl kh tester,I believe I can make my own reagent using hydrochloride acid 0.1M ? I have the Neptune apex and would rather own the alkatronic but a bit to much cash for me.
am I right in thinking I can make my own DIY reagent For the kh director

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[Lasse]

I think it is very difficult to do that because the strength of the solution have to be exactly the same as the original.

Sincerely Lasse

 

[wilsonline]

Looks like many people use 0.1 N acid solution with no issues. Check this

Alternative reagent for Alk monitor, KH Director and prob others

I've been running this for about 6 weeks in my KH Director. Straight swap from the GHL reagent to this, no changes, no recalibration. I got that idea that maybe these alkalinity monitors were just an automation of Randy's DIY alk testing. So I ran through the test using the GHL reagent, and...

www.reef2reef.com

 

[csb123]

You may use any 0.1 N strong acid. Either hydrochloric or sulfuric acid. After several test kits, I get the most consistent reading with the Hanna checker. So, I use this as my standard. The readings are adjusted by comparing the results to a reference standard solution. GHL has a standard solution as well as Fauna Marin that can be purchased.

The KH directors readings can then be adjusted to match these standards. When I use a new bottle of acid bought off of Amazon, I take the opportunity to calibrate the KHD pH probe and pumps.

 

[wilsonline]

I just ordered a gallon of HCl 0.1N from amazon. The only problem is it will take like a month to come. I could have ordered the sulfuric acid, but idk. Not sure what may be the issues with the build-up of sulfates or if the sulfuric acid could have some weird action. That considering I want to dump the water back in the system. There's the option of 1.0 N of HCl acid which would come out super duper cheap in the long run, but I'm not sure how precise I would be able to dilute that and it's a lot less likely to make a mess if I use the reagent straight from the original bottle.

 

[paul01609]

Sorry to bring this up been using hydrochloric acid 0.1M (0.1N) with the kh director ands it’s been great.
but struggling to find it in the u.k and a good price,I company who I got it from last time has this instock

Hydrochloric Acid 0.2M (0.2N) Solution can this be diluted down?​

thanks

 

[halong0511]

Anyone try to make HCl 0.1N from HCL 1N?

 

[LostSoul]

Anyone try to make HCl 0.1N from HCL 1N?

Thats what i use. I have had problems with my KHD for almost 2 years. Up and down measurements all over the place. Back to back tests would run with a 1k diff in either direction. So switched to the HCl and i am within .1 between each test.

 

[paul01609]

Anyone try to make HCl 0.1N from HCL 1N?

I’m using 1.0N hydrocloric acid,I mix mine at 950g of RO to 100g of acid

 

[tmccaff]

How and where you guys order this from? Everywhere I look can't be delivered to residential address. I got Sulfuric acid not sure what differences are from HCL. So far no issues that I am aware of anyway.

 

[Fisherman Joe]

Plucked up the courage to finally try this.

Got some HCL off Amazon. Can 100% confirm it works and is 95% cheaper. Done several tests now on the reference sample of 7.5 dKh and there’s no change.

Thank you!!