
Hanna Instruments HI-93703-57 Glycerol standard for honey and maple syrup photometers, 30ml x 4
The HI-93703-57 is a reagent grade glycerol reference standard used in the calibration of the HI-96785 Honey Colour Analyser and HI-96759 Maple Syrup Photometer.
The glycerol is used to calibrate the photometers to 100% transmittance. A honey or maple syrup sample is then tested to determine the amount of light, at a specific wavelength, that can be transmitted relative to the glycerol standard. The % transmittance is then used to grade the appropriate product. For honey, the results are reported as pfund mm while for maple syrup % transmittance is used. The HI-93703-57 contains 4 bottles with 30 mL of glycerol in each.
Glycerol is a simple organic alcohol compound that is clear, colourless and viscous. Due to these properties it is used to calibrate a photometer to 100% transmittance which is the maximum amount of light that passes through a cuvette containing a sample and detected by a silicon photo-detector. For honey and maple, the calibration is done at a specific wavelength of light. The wavelength used is based on the appropriate method and represents a complementary colour of the sample to be tested.
Specifications
| Package | Bottle |
| Size | 30ml |
| Quantity | 4 |
| Applications | Honey and Maple Syrup, food & beverages |

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.