Hanna Instruments HI-302N Auto-Reverse Magnetic Stirrer
A two-and-a-half litre maximum stirring capacity magnetic stirrer with an advanced circuit allowing auto-reverse stirring.
HI-302N Auto-reverse Magnetic Stirrer
The HI-302N model can stir up to 2.5 litres. It is often desirable to stir your samples in two directions. This will achieve maximum homogeneity and solubility. An advanced circuit allows the HI-302N to reverse the direction of the stirring at a user-selected interval.
The interval can be adjusted from 30 seconds up to 3 minutes. In addition to precision speed control, a limiter will also assure that the maximum speed will never be exceeded.
Hanna stirrers incorporate a VCO device that stops the motor from accelerating as soon as a load is removed (SpeedsafeTM).
Specifications
| Maximum Stirring Capacity | 2.5 litres (0.66 gallons) |
| Low Speed Range | 100 rpm |
| High Speed Range | 800 to 1000 rpm |
| Reverse Interval | from 30 seconds to 3 minutes |
| Power Supply | 110/115 Vac or 230/240 Vac, 50/60 Hz |
| Installation Category | II |
| Cover Material | AISI 316 Stainless Steel |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% |
| Dimensions | 180 x 180 x 70 mm |
| Weight | 1.4 kg |
| Accessories | HI-731320 Magnetic stir bars (10); HI-731361 Retriever bar for magnetic stirrers |
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.