Exact iDip Digital Water Testing

Randy Holmes-Farley · Sep 9, 2015

ATB USA said:
I just talked to Christian @ industrial Test Systems about the Exact idip units.

1. He is offering the MACNA show price till this Friday Kit is $200
2. Thh + Ca does calculate the Magnesium for you

As an estimate, probably. Ask him if it also counts strontium in THH.

So then THH - Calcium = magnesium + strontium.

And, of course, the product will be in very strange units that will require conversion (magnesium in units of calcium carbonate equivalents.

ATB USA · Sep 9, 2015

Randy,
I told him that you were the one they need to talk to about Marine testing.

Greenstreet.1 · Sep 9, 2015

Funny cause yesterday they told me they could not do mag yet.

Just called them again and he said yes they do not have a mag test but I can get my mag levels by letting the app do the math from the other test.

SPotter · Sep 9, 2015

never mind

eXact iDip® · Sep 11, 2015

I'm really excited to see everyone talking about our product! From what I read everything you guys are saying looks accurate, the tests for marine water are currently being reworked and validated because MACNA was our debut in the marine aquarium world. We are excited about catering all of our chemistries to this market and love all the feed back we are getting, keep it coming!

eXact iDip® · Sep 11, 2015

Randy Holmes-Farley said:
As an estimate, probably. Ask him if it also counts strontium in THH.

So then THH - Calcium = magnesium + strontium.

And, of course, the product will be in very strange units that will require conversion (magnesium in units of calcium carbonate equivalents.

This is correct our in app calculation expressed total hardness and calcium hardness as ppm CaCO3 and then makes an auto-calculation for Mg. This is assuming contribution from strontium is negligible, from what I understand strontium would be two orders of magnitude smaller concentration than magnesium correct?

TheEngineer · Sep 11, 2015

@Christian K Welcome!

SPotter · Sep 11, 2015

so if I want to get this meter and be able to test for alk, ca, mg, nitrate and phosphate how much will it cost me?

reefwiser · Sep 11, 2015

Christian any ETA when the units purchased at MACNA will ship?

Randy Holmes-Farley · Sep 11, 2015

Christian K said:
This is correct our in app calculation expressed total hardness and calcium hardness as ppm CaCO3 and then makes an auto-calculation for Mg. This is assuming contribution from strontium is negligible, from what I understand strontium would be two orders of magnitude smaller concentration than magnesium correct?

That is correct that the correction is pretty small. Do you know if your calcium sensor responds to strontium. Many do. If so, the error is in the calcium number, not the magnesium number.

One of your competitors had a similar issue where it impacted the calcium measurement. They subtract a typical NSW value for strontium from the calcium value, and I indicated to them that the 0.5-1% error in calcium from variations in strontium wouldn't be a big deal.

Greenstreet.1 · Sep 11, 2015

SPotter said:
so if I want to get this meter and be able to test for alk, ca, mg, nitrate and phosphate how much will it cost me?

I paid less than 300 and all that you listed is included. Can't wait for it to reach.

eXact iDip® · Sep 11, 2015

Randy Holmes-Farley said:
That is correct that the correction is pretty small. Do you know if your calcium sensor responds to strontium. Many do. If so, the error is in the calcium number, not the magnesium number.

One of your competitors had a similar issue where it impacted the calcium measurement. They subtract a typical NSW value for strontium from the calcium value, and I indicated to them that the 0.5-1% error in calcium from variations in strontium wouldn't be a big deal.

Due to the type of chemistry we employ for the calcium test I think strontium interference would be unlikely. It's quite possible however that the total hardness test would pick up interference from all the Group 2 metals

SPotter · Sep 11, 2015

Greenstreet.1 said:
I paid less than 300 and all that you listed is included. Can't wait for it to reach.

so it was $179 for the meter and then another $120 for reagents?

Greenstreet.1 · Sep 11, 2015

No the site said 179$ but the one they are selling the charge was 200 for the meter

prdubois · Sep 11, 2015

$200 was for the kit with reagents. THH, PH, ALK, CA, Nitrate & Phosphate. Refill Kit was $50
Meter by itself was only $120

prdubois · Sep 11, 2015

They are giving those prices thru today

Greenstreet.1 · Sep 11, 2015

I paid in all 240 and some change the one on the site for 179 comes with the same app take a look it was not a big deal for me so I gave them the 200 with no mention of the site price.

Randy Holmes-Farley · Sep 11, 2015

Christian K said:
Due to the type of chemistry we employ for the calcium test I think strontium interference would be unlikely. It's quite possible however that the total hardness test would pick up interference from all the Group 2 metals

Ok, thanks.

Even nature has a hard time distinguishing strontium from calcium. That's why strontium gets into coral skeletons in place of calcium and in an amount proportional to the amount in the seawater.