SN test result

[Jessi76]

Do you think the test result is good enough for CTB? I did this with about 2.5 grams (large estimate because the scale only has whole gram increments) and 2 x 500 ml of water. This test is for SN only.

I would over happy to get an answer. I want to be sure it works

 

[strangelife]

View attachment 129601

Do you think the test result is good enough for CTB? I did this with about 2.5 grams (large estimate because the scale only has whole gram increments) and 500 ml of water. This test is for SN only.

I would over happy to get an answer. I want to be sure it works

You need to take 1 ml from a glass where you dissolved 2.5 g of sn and pour it into a glass of water (500 ml) and test this liquid

 

[Jessi76]

You need to take 1 ml from a glass where you dissolved 2.5 g of sn and pour it into a glass of water (500 ml) and test this liquid

That's exactly what I did. I followed the instructions exactly

 

[strangelife]

Then the result must be 0,005gm/l , and it seems to be ok

 

[Mayonaise]

Sorry but @strangelife's answer is wrong, that's not how this test kit works.
This kit measures PPM (parts per million). I will spare you the math but 1ppm = 1mg/L. This kit measures up to 1ppm (which is much, much lower if compared to other test kits who go up to 5 or 10). If you want to use your kit, you have to create a solution with a concentration of SN of maximum 1mg/L.
Here's how to:

1. Put 1g of SN in a 1 liter water container, stir/shake carefully
2. Measure 1ml out of that solution - this equals 1mg of SN - and add it to another 1 liter water container, stir/shake carefully
3. Now you have a 1mg/L solution. If you test it and get close to 1,0 then your SN is pure

I know it may upset you but that's the way this kit works. It should be pretty reliable, but if you're not comfortable with it you may want to try another one.
I was thinking of buying the same kit myself but now I'm not quite sure. By the way, you're not supposed to look at the results like you seem to be doing - the kit includes two vials for a reason, take a look at this video

 

[Jessi76]

Thanks for the Tip. I repeated the Test again. Thats looks like 1,0 , or not ?
View attachment IMG_20240303_153709_303.jpg

Sorry but @strangelife's answer is wrong, that's not how this test kit works.
This kit measures PPM (parts per million). I will spare you the math but 1ppm = 1mg/L. This kit measures up to 1ppm (which is much, much lower if compared to other test kits who go up to 5 or 10). If you want to use your kit, you have to create a solution with a concentration of SN of maximum 1mg/L.
Here's how to:

1. Put 1g of SN in a 1 liter water container, stir/shake carefully
2. Measure 1ml out of that solution - this equals 1mg of SN - and add it to another 1 liter water container, stir/shake carefully
3. Now you have a 1mg/L solution. If you test it and get close to 1,0 then your SN is pure

I know it may upset you but that's the way this kit works. It should be pretty reliable, but if you're not comfortable with it you may want to try another one.
I was thinking of buying the same kit myself but now I'm not quite sure. By the way, you're not supposed to look at the results like you seem to be doing - the kit includes two vials for a reason, take a look at this video

 

[Mayonaise]

Thanks for the picture. Yes, it kinda looks like it, but it's hard to tell for sure because of the camera angle. At this point, you should trust your opinion more than mine.
Do you have lab-grade SN? Is the purity listed as being at least 95%?