

Hanna Instruments HI-97105C Marine Master Photometer Kit
The HI-97105C Hanna Marine Master Photometer provides a multiparameter solution for accurately measuring the water in saltwater aquariums. This fish tank photometer measures vital parameters that provide insight into the quality of water, which is key for maintaining proper aquarium maintenance and care.
Marine pH, alkalinity, ammonia, calcium, magnesium, LR and HR nitrate, ULR nitrite and ULR phosphate can all be measured with this multipurpose photometer.
Each HI-97105C is supplied with:
Sample cuvette (2 pcs.)
Sample cuvette cap (2 pcs.)
Marine pH reagent, 30 mL dropper
Marine Alkalinity reagent, 30 mL
Marine Calcium reagents starter kit
Marine Nitrate reagents High Range starter kit
Marine Nitrite reagents ULR starter kit
Marine Phosphate reagents Ultra Low Range starter kit
1 mL graduated syringe with tip (2 pcs.)
Mini pipette with tip (1 pc.)
3 mL Pasteur pipette (2 pcs.)
1.5V AA Alkaline batteries (3 pcs.)
Cloth for wiping cuvettes
Scissors
Instrument quality certificate
Instruction manual
Specifications
Part number/tests |
Parameter |
Range |
Resolution |
Accuracy at 25°C |
HI-780-25/100 |
pH |
6.3 – 8.6pH |
0.1 |
+/-0.2 |
HI-772-26/25 |
Alkalinity |
0.0 – 20.0 dKH |
0.1 |
+/-0.3 & +/- 5% |
HI-784-25/25 |
Ammonia |
0.00 – 2.50ppm |
0.01 |
+/- 0.05 & +/-5% |
HI-758-26/25 |
Calcium |
200 – 600ppm |
1 |
+/- 6% |
HI-783-25/25 |
Magnesium |
1000 – 1800ppm |
1 |
+/-5% |
HI-781-25/25 |
Nitrate Low range |
0.00 – 5.00ppm |
0.01 |
+/-0.25 & +/-2% |
HI-782-25/25 |
Nitrate High range |
0.0 – 75.0ppm |
0.1 |
+/-2.0 & +/-5% |
HI-764-25/25 |
Nitrite ULR |
0 – 200ppb |
1 |
+/-10 & +/-4% |
HI-774-25/25 |
Phosphate ULR |
0.00 – 0.90ppm |
0.01 |
+/-0.02 & +/-5% |
Sku: HI-97105C

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.