Myron L 9PTK - Manual (Page 58)

54
XiX. accessOries
nOte: MSDSs are available on the Myron L website for all solutions:
http://www.myronl.com/main/material_safety_Ds_Dl.htm
A. Conductivity/TDS Standard Solutions
Your Ultrameter III has been factory calibrated with the appropriate
Myron L Company NIST traceable KCl, NaCl, and our own 442™ standard
solutions. Most Myron L conductivity standard solution bottles show three
values referenced at 25°C: Conductivity in microsiemens/micromhos,
the ppm/TDS equivalents (based on our 442 Natural Water™) and
NaCl standards. All standards are within ±1.0% of reference solutions.
Available in 2 oz., quarts/liters, and gallon/~3.8 liter bottles.
1. Potassium Chloride (KCl)
The concentrations of these reference solutions are calculated from
data in the International Critical Tables, Vol. 6. The 7000 µS is the
recommended standard. Order KCL-7000.
2. 442 Natural Water™
442 Natural Water Standard Solutions are based on the following salt
proportions: 40% sodium sulfate, 40% sodium bicarbonate, and 20%
sodium chloride, which represent the three predominant components
(anions) in freshwater. This salt ratio has conductivity characteristics
approximating fresh natural waters and was developed by the Myron L
Company over four decades ago. It is used around the world for
measuring both conductivity and TDS in drinking water, ground water,
lakes, streams, etc. 3000 ppm is the recommended standard. Order
442-3000.
3. Sodium Chloride (NaCl)
This is especially useful in seawater mix applications, as sodium chloride
is the major salt component. Most Myron L standard solution labels show
the ppm NaCl equivalent to the conductivity and to ppm 442 values. The
14.0 mS is the recommended standard. Order NACL-14.0.
B. Titration Standard Solutions
Myron L titration standard solution bottles show both the actual chemical
in solution and the ppm calcium carbonate (CaCO
3
) equivalent. All
standards are within ±1.0% of reference solutions. Available in 2 oz.,
and quart/liter bottles.
1. Alkalinity Standard Solution
ALK(NaHCO
3
)-100 is a solution of sodium bicarbonate (NaHCO
3
)
equivalent to 100 ppm calcium carbonate that is used for the alkalinity
calibration: Order ALK-100.