
Hanna Instruments-740234 Replacement lamp for EPA turbidimeter
The Hanna Instruments-740234 is a replacement tungsten filament lamp for Hanna’s line of EPA compliant turbidity meters.
- Replacement lamp for EPA turbidity meters
Hanna’s EPA compliant turbidity meters are designed to meet or exceed the criteria specified by the USEPA Method 180.1 and Standard Method 2130 B. The USEPA Method 180.1 specifies the key parameters for the optical system to measure turbidity for drinking, saline, and surface water by use of the nephelometric method.
In the nephelometric method, the light beam that passes through the sample is scattered in all directions. The intensity and pattern of the scattered light is affected by many variables, such as wavelength of the incident light, particle size and shape, refractive index, and colour. The optical system includes a tungsten lament lamp, a scattered light detector (90°) and a transmitted light detector (180°).
The Hanna Instruments-740234 is used with the EPA compliant turbidity meters including:
- Hanna Instruments-83414 Turbidity and Free/Total Chlorine Benchtop Meter
- Hanna Instruments-88703 Precision Benchtop Turbidity Meter
- Hanna Instruments-93414 Turbidity and Free/Total Chlorine Portable Meter
- Hanna Instruments-98703 Portable Turbidity Meter

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.