Measuring pH in Wine and Juice
Measuring pH of Concentrated Samples
Measuring pH of Non-Aqueous and Mixed Samples
My samples read pH 13-14, but my highest pH calibration standard buffer only goes to pH 12.46. Will my sample readings be accurate if the calibration buffers don’t bracket the sample pH?
Orion Benchtop and Portable Meter Brochure [EN]
Orion Star A Handheld Meters
Thermo Scientific Orion Star A Handheld Meters provide complete portability without sacrificing testing accuracy. IP-67 waterproof housing and protective plug covers prevent corrosion, even in difficult testing
environments. The bright, backlit displays clearly displays results in rain or shine. The ergonomic design features a recessed grove in the back and a textured keypad to ensure a secure grip, even with gloved or wet hands. Choose from
three meter types:
A100 Series Meters (A122, A123) are single-parameter meters suitable for basic testing needs. They feature a 7-button keypad and English language prompts. Meters hold up to 50 data points and display both
temperature (ºC and ºF) and calibration.
A200 Series Meters (A223) is a dual-range parameter meters capable of storing up to 1000 data points. It features an expanded RDO range (up to 50 ppm) and a real-time clock. Meters have dual-probe capacity –
RDO for standard readings and polarographic for faster DO readings. Other features include DIN pH buffer curves and mV values with pH readings. The multilanguage interface supports English, Spanish, French, Italian, German and Chinese.
A300 Series Meters (A321, A322, A323, A324, A325, A326, A329) are dual or multiparameter units with additional datalogging capabilities and security features. The informative display includes information about
electrode status, time, date, sample ID, user ID, and calibration points. Stability and averaging provide flexible options for data. Units include up to 5-point calibration; calibration editing and log function are automatic. The
non-volatile memory holds up to 5000 data points; units also store up to 10 methods to allow or customized procedures.
Meters are available with a variety of test parameters:
Meters with pH measurement feature automatic calibration for USA/NIST and DIN buffers (3-point calibration for A100 Series meters; 5-point calibration for A200 and A300 Series meters).
Meters with conductivity include readings for conductivity/TDS, temperature (in ºC or ºF), meter mode and power source. Meters include both a selectable cell constant and reading reference temperature to ensure accurate results. A200 and A300 Series meters include a choice of practical salinity or natural sea water curves for salinity readings, plus linear or ISO/EN 27888 curves for TDS.
Meters with dissolved oxygen include DO reading in mg/L or % saturation, temperature (in ºC or ºF), meter mode, and power source. Automatic temperature, manual salinity input, and manual barometric pressure
compensation (automatic compensation on A200 and A300 Series) ensures an accurate result. A100 Series meters have two calibration options: water-saturated air method or a Winkler titration; A200 and A300 Series meters can be calibrated
using water-saturated, air, air-saturated water, Winkler titration or zero-point calibration. These meters can also be used with AUTO-STIR polarographic DO probes for faster readings.
All meters include a universal 100-240 VAC AC adapter. Meters can also be powered by four AA batteries (not included). pH electrode input is BNC; ATC probe input is 8-pin mini DIN.
Key Features
- Ergonomic design and textured keypad work well with gloves or wet hands
- AUTOREAD locks in stable readings and flashes a ready indicator
- IP-67 waterproof housing withstands the rigors of field work
- A200 and A300 Series models support GLP/GMP and datalogging
- 3-year warranty
Specifications for Star A Handheld Meters | |||
---|---|---|---|
A100 Series Meters | A200 Series Meters | A300 Series Meters | |
pH Range: | -2.00 to 16.00 | -2.000 to 20.000 | -2.000 to 20.000 |
pH Resolution: | 0.1, 0.01 | 0.1, 0.01, 0.001 | 0.1, 0.01, 0.001 |
pH Relative Accuracy: | ±0.01 | ±0.002 | ±0.002 |
pH Calibration Points: | Up to 3 | Up to 5 | Up to 5 |
mV Range: | ±1500.0 mV | ±2000.0 mV | ±2000.0 mV |
mV Resolution: | 0.1 | 0.1 | 0.1 |
mV Relative Accuracy: | ±0.2 mV or ±0.05 % of reading, whichever is greater |
±0.2 mV or ±0.05% of reading, whichever is greater |
±0.2 mV or ±0.05% of reading, whichever is greater |
ISE Range: | - | - | 0 to 19,999 |
ISE Resolution: | - | - | Up to 3 significant digits |
ISE Relative Accuracy: | - | - | ±0.2 mV or ±0.05% of reading, whichever is greater |
ISE Units | - | - | ppm, M, mg/L, %, ppb, none |
Temperature Range: | -5º to 105°C; 23 to 221ºF | -5 to 105 | - |
Temperature Resolution: | 0.1 | 0.1 | - |
Temperature Relative Accuracy: | ±0.1 | ±0.1 | - |
Conductivity Range: | 0.1 μS/cm to 200 mS/cm | 0.00 to 3000 mS | 0.00 to 3000 mS |
Conductivity Resolution: | 0.01 μS minimum; 3 significant figures minimum | 0.01 μS minimum; 4 significant figures minimum | 0.01 μS minimum; 4 significant figures minimum |
Conductivity Relative Accuracy: | 0.5 % reading; ±1 digit | 0.5% reading ±1 digit | 0.5% reading ±1 digit |
Conductivity Temperature Compensation: | 20°, 25°C (default 25°C) | 5 °, 10 °, 15°, 20°, 25°C | 5 °, 10 °, 15°, 20°, 25°C |
TDS Range: | 1 to 19,999 mg/L | 0 to 200 ppt | 0 to 200 ppt |
TDS Resolution: | 4 significant digits | 4 significant digits | 4 significant digits |
TDS Relative Accuracy: | 0.5 % reading; ±1 digit | ±0.5% reading ±1 digit | ±0.5% reading ±1 digit |
TDS Factor Range: | Linear, 0.01 to 10.00 (default 0.49) | Linear, 0.01 to 10.00 | Linear, 0.01 to 10.00 |
Resistivity Range: | - | 2 Ohm to 100Meg-Ohm | 2 Ohm to 100Meg-Ohm |
Resistivity Resolution: | - | 2 ohms-cm | 2 ohms-cm |
Resistivity Relative Accuracy: | - | 0.5% ± 1 digit | 0.5% ± 1 digit |
Salinity Type: | - | Practical salinity or natural sea water | Practical salinity or natural sea water |
Salinity Range: | - | 0.01 to 80.0 ppt NaCl equivalent; 0.01 to 42 ppt practical salinity | 0.01 to 80.0 ppt NaCl equivalent; 0.01 to 42 ppt practical salinity |
Salinity Resolution: | - | 0.01 | 0.01 |
Salinity Relative Accuracy: | - | ± 0.1 | ± 0.1 |
DO Concentration Range: | 0 to 20 mg/L | Polarographic: 0 to 90mg/L; RDO optical: 0 to 50mg/L | Polarographic: 0 to 90mg/L; RDO optical: 0 to 50mg/L |
DO Concentration Resolution: | 0.01, 0.1 | 0.01, 0.1 | 0.01, 0.1 |
DO Concentration Relative Accuracy: | ±0.2 |
Polarographic: ±0.2 RDO optical: ±0.1mg/L up to 8mg/L, ±0.2mg/L up to 20mg/L, 10% of reading beyond; ±2% |
Polarographic: ±0.2 RDO optical: ±0.1mg/L up to 8mg/L, ±0.2mg/L up to 20mg/L, 10% of reading beyond; ±2% |
DO % Saturation Range: | 0 to 200 |
Polarographic: 0 to 600; RDO optical: 0 to 500 |
Polarographic: 0 to 600; RDO optical: 0 to 500 |
DO % Saturation Resolution: | 0.1, 1 | 0.1, 1 | 0.1, 1 |
DO Manual Barometric Pressure Correction | 450.0 to 850.0 mm Hg | - | - |
DO Manual Salinity Factor Correction | 0 to 45 ppt | - | - |
DO Sensor Type: | Polarographic | Polarographic or RDO (optical/luminesce-based) DO | Polarographic or RDO (optical/luminesce-based) DO |
Specifications for Star A Handheld Meter Kits | ||
---|---|---|
Model | Measures | Kit Includes |
A321 | pH/ORP/Temp |
ROSS Triode; pH 4, 7, 10 buffers, 10 pouches of each; ROSS electrode storage solution, 475 mL; Rinse solution, 10 pouches; Protective armor w/ electrode holder; Hard carrying case |
A122 | Conductivity/Temp | Conductivity cell, K=1.0; Conductivity standard, 1413 μS, 5 x 60 mL; Rinse solution, 10 pouches; Protective armor w/ electrode holder; Hard carrying case |
A222 | Conductivity/Temp |
DuraProbe conductivity cell, 3m cable, K=0.475; Conductivity standard, 1413 μS, 10 pouches; Rinse solution, 10 pouches; Protective armor w/ electrode holder; Hard carrying case |
A322 | ||
A123 | DO/Temp | Polarographic DO probe; Calibration sleeve for DO probe; DO probe maintenance kit; Protective armor with electrode holder; Hard carrying case |
A223 | RDO/DO/Temp |
RDO optical/luminescence-based probe, 3m cable, s/s guard, calibration sleeve and cap; Protective armor w/ electrode holder; Hard carrying case |
A323 | ||
A324 | pH/ISE/ORP/Temp | ROSS Triode; pH 4, 7, 10 buffers, 10 pouches of each; ROSS electrode storage solution, 475 mL; Rinse solution, 10 pouches; Protective armor w/ electrode holder; Hard carrying case |
A325 | pH/ORP/Cond/Temp |
ROSS Triode, 3m cable; DuraProbe conductivity cell, 3m cable; pH 4, 7, 10 buffers, 10 pouches of each; ROSS electrode storage solution, 475 mL; Conductivity standard, 1413 μS, 10 pouches; Rinse solution, 10 pouches;
Protective armor w/ electrode holder; Hard carrying case |
A326 | pH/ORP/RDO/DO/Temp |
ROSS Triode, 3m cable; RDO optical/luminescence-based probe, 3m cable, s/s guard, calibration sleeve and cap; pH 4, 7, 10 buffers, 10 pouches of each; ROSS electrode storage solution, 475 mL; Conductivity standard,
1413 μS, 10 pouches; Rinse solution, 10 pouches; Protective armor w/ electrode holder; Hard carrying case |
A329 | pH/ISE/ORP/Cond/RDO/DO/Temp |
ROSS Triode, 3m cable; DuraProbe conductivity cell, 3m cable; RDO optical/luminescence-based probe, 3m cable, s/s guard, calibration sleeve and cap; pH 4, 7, 10 buffers, 10 pouches of each; ROSS electrode storage
solution, 475 mL; Conductivity standard, 1413 μS, 10 pouches; Rinse solution, 10 pouches; Protective armor w/ probe holders; Hard carrying case |
Item | Meter Model | Type | Unit of Measure | Price | Purchase | |
---|---|---|---|---|---|---|
EF9439H
STARA3245
|
A324 Kit | pH/ISE | Each |
$1,760.95
|
||
EF9439L
STARA3260
|
A326 | pH/RDO/DO | Each |
$1,488.95
|
||
EF9437L
STARA1230
|
A123 | DO | Each |
$728.95
|
||
EF9439B
STARA3215
|
A321 Kit | pH | Each |
$1,508.95
|
||
EF9438DA
STARA2225
|
A222 Kit | Conductivity | Each |
$1,481.95
|
||
EF9439P
STARA3295
|
A329 Kit | pH/ISE/Cond/DO | Each |
$3,582.95
|
||
EF9439K
STARA3255
|
A325 Kit | pH/Cond | Each |
$2,479.95
|
||
EF9437G
STARA1220
|
A122 | Conductivity | Each |
$719.95
|
||
EF9439E
STARA3230
|
A323 | RDO/DO | Each |
$1,175.95
|
||
EF9439A
STARA3210
|
A321 | pH | Each |
$879.95
|
||
EF9437H
STARA1225
|
A122 Kit | Conductivity | Each |
$1,326.95
|
||
EF9438F
STARA2230
|
A223 | RDO/DO | Each |
$944.95
|
||
EF9437M
STARA1235
|
A123 Kit | DO | Each |
$1,658.95
|
||
EF9439G
STARA3240
|
A324 | pH/ISE | Each |
$1,231.95
|
||
EF9439J
STARA3250
|
A325 | pH/Cond | Each |
$1,467.95
|
||
EF9438D
STARA2220
|
A222 | Conductivity | Each |
$942.95
|
||
EF9439F
STARA3235
|
A323 Kit | RDO/DO | Each |
$2,059.95
|
||
EF9439M
STARA3265
|
A326 Kit | pH/RDO/DO | Each |
$2,642.95
|
||
EF9438FA
STARA2235
|
A223 Kit | RDO/DO | Each |
$1,900.95
|
||
EF9439D
STARA3225
|
A322 Kit | Conductivity | Each |
$1,672.95
|
||
EF9439C
STARA3220
|
A322 | Conductivity | Each |
$1,174.95
|
||
EF9439N
STARA3290
|
A329 | pH/ISE/Cond/DO | Each |
$1,993.95
|