Is this SN test kit legit?

[usernamenoonecares]

I want to test the SN I have, and I have found this SN test kit online. Do you guys think that it is a legit product?

Sodium Nitrite Test Kits

Sodium Nitrite Test Kits from ChemWorld.com. Easy to use titration tests. Buy directly online. Fast shipping from Illinois and Michigan.

www.chemworld.com

 

[Nikitatos]

Never used it, but it looks fine.

 

[Mayonaise]

It seems to be very reliable, especially considering how expensive it is. Read carefully the instructions, it may not be so easy to use if compared to other kits