Preparing the meter for calibration – Nova-Tech pH 310 User Manual

Page 7

pH 300 meter calibration

The

300

meter

capable of up to 5-point pH calibration to ensur

e accuracy acr

oss

the entir

e pH range of the meter

. Select fr

om the following buf

fer options:

pH 1.68, 4.01, 7.00, 10.01, and 12.45.

The meter automatically r

ecognizes and calibrates to these standar

d buf

fer values,

which makes pH calibration faster and easier

pH 310 meter calibration

The pH 310 meter featur

es thr

ee separate buf

fer sets. Select the buf

fer set you r

equir

e in

Set Up mode Pr

ogram 4.0 (see page 34 for mor

e information). The pH 310 meter is

capable of up to 6-point pH calibration, depending on the buf

fer set. Select fr

om the

following buf

fer options:

USA

buf
fers (pH 1.68, 4.01, 7.00, 10.01, 12.45)

NIST buf

fers (pH 1.68, 4.01, 6.86, 9.18, 12.45)

DIN buf

fers (pH 1.09, 3.06, 4.65, 6.79, 9.23, 12.75)

The meter automatically r

ecognizes and calibrates to these standar

d buf

fer values,

which makes pH calibration faster and easier

For information on how to calibrate your meter:

• See section 4.3 on pages 14-15 for pH calibration

• See section 4.4 on page 16 for Relative mV calibration

•

See section 4.5 on pages 17 for T

emperatur

e Calibration of r

eplacement

temperatur

e pr

obes or r

eplacement “All-in-One” electr

odes

Preparing the Meter for Calibration

Befor

e starting calibration, make sur

e you ar

e in the corr

ect measur

ement mode.

When you switch on the meter

, the meter starts up in the units last used. For

example, if you shut the meter of

f in "mV" units, the meter will r

ead "mV" units

when you switch the meter on.

Be sure to remove the protective electrode storage bottle or rubber cap of the

probe before calibration or measurement.

If the electr

ode has been stor

ed dry

wet the pr

obe in tap water for 10 minutes befor

e calibrating or taking r

eadings to

saturate the pH electr

ode surface and minimize drift.

ash your pr

obe in deionized water after use, and stor

e in electr

ode storage solu-

tion. If storage solution is not available, use pH 4.0 or 7.0 buf

fer
.

Do not r

euse buf

fer solutions after calibration. Contaminants in the solution can

fect the calibration, and eventually the accuracy of the measur

ements.

See page 41

for information on our high-quality OAKT

ON pH buf

fers.

4. Calibration

Important Information on Meter Calibration

When you r

ecalibrate your meter

, old pH, Rel mV and mV calibration points ar

e r
eplaced on

a point by point basis. For example, if you pr

eviously calibrated your meter at pH 4.01, 7.00,

and 10.01, and you r

ecalibrate at pH 7.00, the meter r

etains the old calibration data at

pH 4.01 and pH 10.01. T

o view curr

ent calibration points, see Pr

ogram P2.0 in the SETUP

section, page 29.

completely r

ecalibrate your meter

, or when you use a r

eplacement pr

obe, it is best to set

the meter to its factory defaults and r

ecalibrate the meter at all points. T

o r

eset the meter to

its factory defaults, see the SETUP section Pr

ogram P5.0, page 36 (for pH 300 meter) or

ogram P6.0, page 39 (for pH 310 meter).

4.2

4.1

http://www.novatech-usa.com/Products/Laboratory-Equipment-Supply-Products Tel: (281) 359-8538 Toll Free:(86

6) 433-6682

This manual is related to the following products:

pH 300