View Full Version : Can I simply replace my brs 75gpd membrane with a spectrapure 99% membrane?

01/30/2015, 02:02 AM
Hello, I have a 75gpd BRS 5 stage rodi and would like to use the 99% rejection membrane. Which Gpd membrane do you suggest I replace it with? I have no idea if I have a flow restrictor on the rodi unit and would simply like to swap out the membranes. Would this be a problem?

01/30/2015, 09:40 AM
Almost. You do have a flow restrictor, as that is what provides some resistance in your waste line, ensuring that the proper ratio of water is forced through the membrane. You should also get the matching flow restrictor. I went to the 90 GPD, which provides plenty of water for my tank and drinking water.

01/30/2015, 09:58 AM
Thank you. I'll look for the flow restrictor on the Spectrapure page.

02/02/2015, 09:20 AM
Hello. I will be happy to help you.

Some good sources of critical information before we start:

Our warranty information can be found at http://spectrapure.com/Warranty-info

Return information and the process as a whole: https://spectrapure.com/index.php?route=account/return/insert

Much information can be found for in your manual which you can download here: http://spectrapure.com/Product-Manuals

Many questions are answered here and it may help you immediately: http://spectrapure.com/technical-info

And many in depth discussions on issues and performance can be found here: http://spectrapure.com/frequently-asked-questions

We want to help you and give you as much information as we can to help you be successful.

Now onward, I need to get some background information from you that will help me assist you and get your system or problem fixed as fast as possible.

1) What model of system? (component) (from the sticker) do you have?
2) What is the date (if available) on the sticker for the system/item?
3) Did you purchase this from Spectrapure (a), or from a retailer or other source(b)?
a. Can you provide a copy of and tell me the date on our invoice and the invoice number/proof of purchase?
b. Can you provide a copy and tell me the date on the invoice and the invoice number or proof of purchase?
4) What is your pressure reading on the gage on the system during operation?

Please refer to your system manual:
5) What color flow restrictor does your system have installed? Red or green?
6) What amount of product water is produced in 1 minute? We prefer this in milliliters.
7) What amount of waste water is produced in 1 minute? (again, in milliters).

Other critical information for us to help you. You may need to have a copy of your local water report on hand:
8) What is your water temperature?
9) What is your water pressure?
10) What is the pH of the source water?
11) What is the kH of the source water?
12) What is the gH of the the source water?
13) Are you on a well or on a city source?
14) When making DO water, do you make large batches, 5 gallons, 50 gallons, or drinking water? Or as needed small batches? etc etc etc
15) Does the waste water etc etc
16) How many gallons of product water do you make each month?
17) When was your last pre filter change?
18) When was your last membrane change?
19) When was your last DI change?
20) Can you please send us a copy of your water report, this can very helpful!