|This instrument is very simple to
use. It is manufactured by Hanna Instruments, a leader in electronic measurement
Just insert it into your distilled
water and it will read directly in uS (micro siemens). It is temperature compensated
and is accurate to within 2 percent (of full scale). When testing ionic/colloidal
silver water the reading is in PPM. The range is 0-99.9 uS/cm or 0-99.9 PPM.
The PWT (Pure Water Tester) comes with batteries which will
provide approximately 150 hours of continuous use.
This unit sells for $60.00 (factory price).
We also have standard calibration solutions so you can make
sure your meter is always reading correctly. A 230 ml bottle sells for
$11.00. If ordered with the tester, the solution is shipped free.
recommend you purchase calibrating solution because the instrument does
require recalibration when first used and from time to time. The
factory includes a small screwdriver in each box so you can perform the
calibration very easily. All you need is a small glass vessel to hold
the solution while the meter is inserted in the solution.
This unit is warranted to be trouble free for 1 year.
We are the west coast distributor for the Hanna Instruments
PWT meter. Dealer inquiries are invited.
We can also provide all Hanna Instruments equipment at the
factory price. We are a factory authorized Hanna Instruments dealer.
Click the logo to go to Hanna Instruments
There are several companies selling other Hanna instruments
they indicate will test colloidal silver but were really designed to measure TDS (total
dissolved solids). As calibrated from the factory the TDS meters will normally read
only about one half the PPM of ionic silver that the PWT meter will read. Most of
the Hanna TDS instruments have ranges of 0-999 PPM or 0-1999 with 2% accuracy of full scale.
That means the unit can be off by as much as 20 or 40 PPM at the
low OR high end of the range or at any
reading. If you are trying to measure colloidal silver at the 5-15 PPM range, it is obvious that a 20 or 40 PPM possible error is not acceptable especially if the reading
is only half the actual amount of silver in the water. The PWT will not be off more
than 2 PPM so you can see how much more accurate it is.
The PWT meter is the only meter that works at the accuracy
and range desired to measure CS.
All other dealers we have observed selling these units are
also inflating their prices above factory prices because they are not Hanna dealers or are
trying to make extra profit. Check with us before you spend your money on another
unit touted as being useful for checking colloidal silver. The PWT is the only meter
that works well for this purpose and at the right price.