Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


SurTec 495 application

SurTec 495 application

SurTec 495 application

Dear All,
Does anyone have experience using SurTec 495? What is the best mixing ratio between SurTec 495 and sulphuric acid? Or should I only use sulphuric acid to adjust the pH? I use this chemical at a laboratory level in small quantities.

RE: SurTec 495 application

Did you buy this product or you won it at the chook raffle? In the unlikely event you bought it, how about asking the supplier or manufacturer for guidance?
Do you really believe that an engineering forum can substitute the manufacturer's knowledge?

RE: SurTec 495 application

Dear gr2vessels,
Many thank for your helpful comment. I bought this chemical (together with 650RTU and 181) and I have never used it before that is why I do not have any experience about it. I received the related TDS-s as well and I can tell You that Surtec guys are very friendly and they helped and help a lot to us. Of course I did not ask my question here for some kind of substitution, I contacted them as well. At the moment they did not add any new info compared to the TDS. Maybe I do not understand it well. TDS writes:
SurTec 495 can be applied in immersion or spray application.
make-up values:
SurTec 495 50 g/l (30-90 g/l)
sulfuric acid 50 g/l (30-60 g/l)
Here it is clear for me that I need to use sulphuiric acid and 495 at a 50g/l cc level.
Steps for make-up:
1. Fill half of the bath with water.
2. Add sulfuric acid.
3. Add the required amount of SurTec 495.
4. Fill up to the final volume.
For me this means that if I would like to prepare a 1000ml solution, then first I need to fill 500ml water, then put 100g lets say 50% sulphuric acid, then put 50g SurTec 495, and finally add 500ml water. Am I right? I am not sure about that. Additionally, they write that I need to adjust the pH with sulphuric acid.
Anyway, I will come back when I have answer from SurTec. Have a nice day,


RE: SurTec 495 application

The above approach is okay. Recommendation is to make up e.g. a 50g/l sulphuric acid and 50g/l Surtec 495 and mix them 1:1.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close