Hach-Lange STABLCAL - Manual (Page 9)

STABLCAL Stabilized Formazin Turbidity Standards
9
GB
To ensure accurate results, read carefully before proceeding.
CAUTION!
Reagents included may be harmful if misused. Please read the warnings on all
chemical containers and use appropriate safety equipment.
CAUTION!
The exact designation of the STABLCAL Stabilized Formazin Standards is shown in
the Certificate of Compliance (Cat. No. 26595-87). Enclosed in the package.
Storing and Handling StablCal* Standards
• Do not transfer a standard to another container for storage.
• Store standards between 5 and 25 ˚C (avoid prolonged exposure to
temperatures exceeding 40 ˚C).
• For long-term storage (more than one month between use) refrigerate at 5 ˚C.
• Do not place used standard from the sample cells back into the original
container.
• Always allow the standard to acclimate to ambient instrument temperature
before use (not to exceed 40 ˚C).
• Store away from direct sunlight. Sealed vials should be stored in their original set
with the case cover on.
• StablCal Standards
> 1 NTU have a shelf life of 24 months from date of
manufacture. StablCal Standards/Solutions
≤ 1 NTU have a shelf life of
12 months from date of manufacture.**
• Do not attempt to remove the caps from the sealed sample cells (vials).
Instructions for Use
Three sets of instructions are provided in this instruction card. Two of these sets of
instructions apply to all StablCal Standards except the < 0.1 NTU StablCal Solution
(Cat. No. 26597). Follow the special instructions on page 11 for < 0.1 NTU StablCal
Solutions.
Follow the first set of instructions, ”For Infrequently Used StablCal Standards“ on
page 10, if:
• your standards have been sitting undisturbed for longer than one week, OR
• your standards are new and received from the manufacturer.
Follow the second set of instructions, ”For Frequently Used StablCal Standards“ on
page 10, if:
• your standards are used often (daily or weekly).
Follow the third set of instructions, ”Using < 0.1 NTU StablCal Solution“ on page 11,
for that solution only.
* StablCal ® is a registered trademark of Hach Company.
** StablCal Standards
≤1NTU have a unique set of instructions for use. Good calibration technique is essential for accurate low-
end measurements.