Almost a year ago, we purchased this In-Line Dual TDS Monitor to monitor the performance of our new RO system: (http://steepster.com/teas/teaware/37798-abundant-flow-water-6-stage-alkaline-zoi-zeta-reverse-osmosis-system). This meter monitors the TDS both before and after the RO system, which is important for brewing tea:

“Water with 50 – 150 ppm total dissolved solids (TDS) or 1 to 3 grains hardness provides the best results, according to the Tea Association of the USA." http://www.teaandcoffee.net/0609/tea.htm

Sensor Locations:
• For monitoring the TDS level of the untreated water, the “TDS In” sensor should be installed after all the pre-filters and just before the RO membrane.
• For monitoring the performance of the RO membrane, the “TDS Out” sensor should be immediately after the RO membrane.

These two sensor locations provide the two TDS levels necessary to calculate “RO Percentage Rejection” – the parameter that determines when to replace the RO membrane (about every 3 years). See the bottom ½ of this page: http://www.tdsmeter.com/what-is?id=0003

1. If the water in your area requires an RO system and you wish to use this water for brewing tea, a re-mineralization filter such as this (http://steepster.com/teas/teaware/39532-puregen-aptera-alkamag-water-filter) is highly recommended.
2. An additional fitting should be added to RO System that has a re-mineralization filter so the output sensor can be located either after the RO membrane for maintenance purposes, or after the re-mineralization filter to monitor the TDS of water used for brewing tea.

After using this In-Line Dual TDS Monitor for nearly a year, I’ve found it to be a simple and reliable device that provides consistent TDS data for monitoring the performance of both RO systems and re-mineralization filters. Highly recommended.

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I am passionate about teas that are full-bodied, rich, & smooth. I joined Steepster to explore Multiple Infusion Teas (MITs) such as Pu-erh.

Currently, my focus is on un-flavored orthodox black & pu-erh teas. Cost-effective organic teas or teas that meet the EU Food Safety Commission Pesticide Maximum Residue Limit are also of interest.

My wife is an Earl Grey Fan. We enjoyed Twinings for many years – mostly Earl Grey, also English/Irish Breakfast, & Prince of Wales. Several years ago, TEG no longer tasted as good.

Through our local co-op we tried Frontier Natural Products Co-op bulk loose tea – mostly Assam, also Irish Breakfast, & EG.

Rishi EG & China Breakfast then became our regular teas. However, after winning Tea Expo awards, the prices kept rising.

Kevin at The Whistling Kettle introduced me to Keemun, which I thoroughly enjoyed, and my wife enjoyed their Earl Grey Cream.

Our most recent orders were from TeaVivre & Zen Tea Life. Kudos to both Angel Chen and Kenneth Son who have been extremely helpful.

High quality water is essential for excellent tasting tea.
Our 450’ well provides hard water. For details see: http://steepster.com/looseTman/posts/176233#comments.

#1. Rainsoft water softener with
Q2 computerized control valve

#2. Abundant Flow Water
Reverse Osmosis Drinking Water System with re-mineralization filter
Model: Zeta RO: https://www.afwfilters.com/drinking-ro-systems/6-stage-alkaline-zoi-zeta-reverse-osmosis-system-16.html
- Dow Filmtec TFC R.O. membrane
- Omnipure Inline Post filter
- Puregen Aptera Alkaline Filter: http://www.puregen.com/products_detail.php?id=301&lang=en

- Aquatec ERP-500 & ASV 2000
- 3/8" Output
- HM Digital DM-1: http://www.tdsmeter.com/products/dm1.html

My profile picture is a Red-Breasted Nuthatch, an annual winter visitor to our woodpecker feeder.


Mid-Atlantic, USA

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