Hanna Instruments HI 96821 User Manual

Page 10

MAKING A STANDARD SODIUM CHLORIDE SOLUTION

To make a Standard NaCl Solution (g/100 g), follow the procedure below:
• Place container (such as a glass vial or dropper bottle that has a cover) on an analytical balance.

• Tare the balance.
• To make an X NaCl solution weigh out X grams of high purity dried Sodium Chloride (CAS #:

7647-14-5: MW 58.44) directly into the container.

• Add distilled or deionized water to the container so the total weight of the solution is 100 g.
Example with g/100 g NaCl:
g/100 g NaCl

g NaCl

g Water

g Total

10.000

90.000

100.000

To replace the instrument’s battery, follow these steps:
• Make sure the instrument is off.

• Turn instrument upside down and remove the battery cover by turning it counterclockwise.

• Extract the battery from its location.
• Replace with a new 9V battery making sure to observe polarity.
• Insert the back battery cover and fasten it by turning clockwise to engage.

BATTERY REPLACEMENT

WARRANTY

The HI 96821 is warranted for two years against defects in workmanship and materials when
used for its intended purpose and maintained according to the instructions.
This warranty is limited to repair or replacement free of charge.
Damage due to accident, misuse, tampering or lack of prescribed maintenance is not covered.
If service is required, contact your dealer. If under warranty, report the model number, date of
purchase, serial number and the nature of the failure. If the repair is not covered by the warranty,
you will be notified of the charges incurred.
If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods
Authorization Number from the Customer Service Department and then send it with shipment
costs prepaid. When shipping any instrument, make sure it is properly packaged for complete
protection.
To validate your warranty, fill out and return the enclosed warranty card within 14 days from the
date of purchase.