Normalization Program for RO – TorayTrak (Manual)

May 29, 2021


To assist in RO system performance and data normalization, TORAY developed a RO performance data normalization program called TorayTrak. TorayTrak is available for download at the Toray web site ( free of charge.
Toray provides TorayTrak as a Macro-Free Microsoft Excel program with five versions to handle different process system designs and varied operational data collection points. The process schemes available are:
 A.    A one-stage system: TorayTrak_OneStage_PTotal.xlsx
 B.    A split permeate one-stage system: TorayTrak_OneStage_Split.xlsx
 C.    A two-stage system with first and second stage permeate flow rate monitoring:  TorayTrak_TwoStage_PF1_PF2.xlsx
 D.    A two-stage system with first stage and overall permeate flow rate monitoring:  TorayTrak_TwoStage_PTotal_PF1.xlsx
 E.    A two-stage system with second stage and overall permeate flow rate monitoring:  TorayTrak_TwoStage_PTotal_PF2.xlsx

Procedures for normalization are given in ASTM D 4516. 
The following is a general introduction to TorayTrak for a one-stage system as an example.

1) Configuration

1.    Left-click your mouse on the "Configuration" Tab. All required system information is in green fill.
2.    From the drop-down lists, enter Toray membrane model numbers, enter the number of pressure vessels (PV), and the number of elements per pressure vessel.
3.    Next, select the desired engineering units. These units must remain consistent for all data entries in the workbook.

2) Input data
1.    Left-click your mouse on the "Data" tab where you will enter the membrane performance data.
2.    Starting on row 6, enter membrane performance data in columns A through K. All columns titled in the yellow coloured field after the Date entry must contain data out to column K.
3.    Baseline data to establish recommended cleaning lines are generated by averaging the data entered in rows 7–10.

3) Trend graph
"NormPerm," "NormSP," and "NormDP" tabs automatically displays the trend graphs of the normalized membrane performance data by the overall system.

The data and information contained in this document are based upon rigorous technical testing by Toray, and is to the best of our knowledge reliable. Toray cannot control design and operating conditions, and consequently Toray does not assume any liability for results obtained or damage incurred through the application of the information provided herein. No liability, warranty or guarantee of final product performance by Toray is implied by the information provided in this document.
This manual supersedes all previous versions. Technical modification of products or production technology may necessitate changes to information in this manual without prior notice. Please verify that your version of the manual is the latest version available by either contacting Toray, or checking online at

This content is extracted from Toray’s “Toray RO Handling Manual (Version. Apr. 2021)” (the Manual). Please refer to other contents stated in the Manual. When using this content, please read the Terms and Conditions of Use stated in the manual and agree to them before using this content.