LaMotte SMART Spectro Spectrophotometer - Manual (Page 84)

CALCIUM & MAGNESIUM (TOTAL)
HARDNESS, UDV
UNIT DOSE VIAL METHOD • CODE 4309-J
QUANTITY CONTENTS CODE
1 Calcium Hardness Unit Dose Vials, 20 pouches 4309-J
Equipment needed but not supplied:
STANDARD ACCESSORY PACKAGE • CODE 1961
1
Package of 3 Vials (empty) 0156
1 Syringe, 3 mL, plastic 1184
1 Foil Storage Bag 9467
Or:
ADVANCED ACCESSORY PACKAGE • CODE 1962
1
Pipettor, 3 mL 30528
1 Pipet Tips (0-5 mL) 30695
1 Cuvette Rack 31695
1 Package of 3 Vials (empty) 0156
1 Foil Storage Bag 9467
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents
go to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail,
phone or fax.
APPLICATION: Drinking and surface waters; swimming pool water.
RANGE: 10–500 as CaCO
3
Total Hardness
MDL: 10 ppm
METHOD: Calcium and magnesium react in a strongly buffered
medium with an indicator to develop a pale purple color
in proportion to the concentration.
SAMPLE HANDLING &
PRESERVATION:
Samples should be analyzed as soon as possible after
collection. If storage is necessary, add 0.5 mL of 20
% hydrochloric acid per 100 mL of sample. However,
the added acid will have to be neutralized with NaOH
before testing.
INTERFERENCES: Heavy metals will interfere.
SMART Spectro Test Procedures 2.11 CALCIUM & MAGNESIUM HARDNESS, UDV
Test P
rocedures