$2,413.95
Prices include GST. Not all items are in stock. Call 03 9769 0666 to confirm.
HI6421 is a streamlined dissolved oxygen benchtop meter supplied with Hanna’s HI7641133 optical dissolved oxygen probe (opdo®) and features a large touchscreen display for fresh and saltwater measurements.
HI6421 is a streamlined benchtop meter with a large touchscreen display, comprised of a housing and an integrated module designed for fresh and saltwater measurements of dissolved oxygen.
HI6421 includes Hanna’s HI7641133 optical dissolved oxygen probe (opdo®) that is based on the principle of fluorescence quenching. An immobilized Pt-based luminophore is excited by the light of a blue LED and emits a red light. As oxygen interacts with the luminophore it reduces the intensity and lifetime of the luminescence. The lifetime of the luminescence is measured by a photodetector and is used to calculate the dissolved oxygen concentration.
The probe is fitted with easy to use Smart Caps (HI764113-1) which lock in place and contain pre-loaded calibration coefficients that are automatically transmitted to the probe. The Smart Cap features an immobilized O₂ sensitive luminophore with a rugged insoluble black oxygen permeable protective layer. Over time, the sensor’s optical components can age but are compensated for by using the reference signal to compensate the measuring path. As a result, the sensor provides accurate DO measurements over long periods of time without the need for frequent calibration. Concentration measured. Additional features include built-in methods and calculations for the measurement of BOD (Biological Oxygen Demand), OUR (Oxygen Uptake Rate), and SOUR (Specific Oxygen Update Rate). Pressure compensation is done automatically (built-in barometer) or users have the option to manually enter required value. Pressure is displayed in user-configurable units: mmHg, mbar, kPa, inHg, psi, and atm.
HI6421 is supplied with HI7641133 optical dissolved oxygen probe (opdo®); HI764060 electrode holder; capillary pipette; 24 VDC power adapter; USB-C to USB-A cable; probe quality certificate; quick reference guide with instrument quality certificate.
HI7641133 optical dissolved oxygen probe (opdo®)
HI764113-1 Smart cap with o-ring
HI764113-2 Calibration/storage vessel
HI764113-3 Stainless steel protective shield
| SKU | HI6421P-02 |
| DO Range | HI6421 - HI7641133 Optical probe: 0.00 to 50.00 mg/L (ppm) concentration; 0.0 to 500.0% saturation HI6421P - HI764833 Polarographic probe: 0.00 to 90.00 mg/L (ppm) concentration; 0.0 to 600.0% saturation |
| DO Accuracy (@25˚C/77˚F) | HI6421 - HI7641133 Optical probe: from 0.00 to 20.00 mg/L (ppm) 1.5 % of reading or ± 0.01 mg/L (ppm), whichever is greater from 20.00 to 50.00 mg/L (ppm) ±5% of reading from 0.0 to 200.0% saturation ± 1.5% of reading or ± 0.1%, whichever is greater from 200.0 to 500.0% saturation ±5% of reading HI6421P - HI764833 Polarographic probe: ±1.5 % of reading ±1, least significant digit |
| DO Resolution | HI6421 - HI7641133 Optical probe: 0.01 mg/L (ppm); 0.1% saturation HI6421P - HI764833 Polarographic probe: 0.01 mg/L (ppm); 0.1% saturation |
| DO Calibration | DO optical: One or two points automatic calibration at 100% (8.26 mg/L) and 0% (0 mg/L). Single point manual using a value entered by the user in % saturation or mg/L. DO polarographic: Automatic-two points / User standard-single point |
| Barometric Pressure Range | 450 to 850 mmHg; 600 to 1133 mBar; 60 to 133 kPa; 17 to 33 inHg; 8.7 to 16.4 psi; 0.592 to 1.118 atm |
| Barometric Pressure Resolution | 1 mmHg; 1 mBar; 1 kPa; 1 inHg; 0.1 psi; 0.001 atm |
| Barometric Pressure Accuracy | ±3 mmHg within ±15 % from the calibration point; ±3 mmHg ±1 least significant digit |
| Temperature Range | −20.0 to 120.0 °C −4.0 to 248.0 °F 253.0 to 393.0 K |
| Temperature Resolution | 0.1 °C; 0.1 °F; 0.1 K |
| Temperature Accuracy | ±0.2 °C; ±0.4 °F; ±0.2 K |
| DO Probe | HI6421: HI7641133 Optical probe HI6421P: HI764833 Polarographic probe |
| Power Supply | DC adapter 100-240AC to 24VDC 2.5A |
| Environment | 0 - 50 °C / 32 - 122 °F / 273 - 323 K maximum 95% RH non-condensing |
| Dimensions | 205 x 160 x 77 mm (8.0 x 6.2 x 3.0") |
| Weight | Approximately 1.2 kg (26.5 lbs.) |
| Ordering Information | HI6421 is supplied with HI7641133 optical dissolved oxygen probe (opdo®); HI764060 electrode holder; capillary pipette; 24 VDC power adapter; USB-C to USB-A cable; probe quality certificate; quick reference guide with instrument quality certificate. HI6421P is supplied with HI764833 polarographic probe; HI764060 electrode holder; capillary pipette; 24 VDC power adapter; USB-C to USB-A cable; probe quality certificate; quick reference guide with instrument quality certificate. |
| Warranty | 2 years |
All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.
Free standard delivery: We offer free delivery within Australia on orders over $100, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient's location. Free shipping is not available with other offers or discounts.
Same-day despatch: Place your order before 1 PM Monday to Friday for same-day despatch (leaves our warehouse). Delivery times may vary depending on the courier service and the recipient's location. Subject to stock availability.
Please note that we do not offer shipping to PO Box addresses.
| Weight | 1.2 kg |
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To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
