Agriculture
January 17, 2024
Hach Drinking Water Test Kit
Read SolutionImplemented by
HACH
Product Description
The NTU Singapore Water Test is a portable device designed to detect trace levels of heavy metals in drinking water in just five minutes. The device uses an optical fiber sensor modified with a chelating agent which binds to metal ions. A laser shines through, and the resulting shift in the output light spectrum sensor is read by a processing unit that displays the results of the water quality test. This product is still in prototyping phase.
Target SDGs
SDG 6: Clean Water and Sanitation
SDG 3: Good Health and Well-Being
Target Users (Target Impact Group)
Household
Distributors / Implementing Organizations
Unknown
Competitive Landscape
Direct competitors include ANDalyze AND1100 Fluorimeter.
Manufacturing/Building Method
This product is currently in the prototyping phase and not yet manufactured at scale.
Intellectural Property Type
Patent
User Provision Model
The designers have not yet selected their user provision model.
Distributions to Date Status
None
Test types included
Up to 24 types of metal contaminants, including Ca2+, Cs2+, Cu2+, Fe2+, Mg2+, Mn2+, Ni2+, Zn2+, and Cd2+, Pb2+.
Equipment included
Handheld device, disposable sensor cartridge
Tests per kit
Unknown
Detection range
Lead: =<5 ppb
Processing time for one sample (hr)
5 minutes
Additional materials required
Disposable sensor cartridge
Power required (yes/no)
No
Complete kit weight (kg)
0.8 kg
Design Specifications
The device sensing region uses L-glutathione (GSH), a chelating agent which functions to specifically bind Pb2+ onto the optical fiber sensor for on-site detection of heavy metal ions. The detection time is less than five minutes, and can detect up to 24 metal contaminants. The device has an overall dimension of 203 mm × 149.50 mm × 65 mm and weighs 0.8 kg.
Product Schematics
Technical Support
Provided by the manufacturer
Replacement Components
Disposable sensor cartridges
Lifecycle
Unknown
Manufacturer Specified Performance Parameters
The designers aim to have heavy metal tests completed in under five minutes, have the tests perform in temperatures up to 40°C, and have a detection limit of 5 ppb.
Vetted Performance Status
The device demonstrated a measured detection limit of 5 ?g/L and good selectivity toward Pb2+ even with the presence of other metal ions.
Safety
Unknown
Complementary Technical Systems
Battery charging and disposable sensor cartridges
Academic Research and References
Yap, S.H.K., et al., 2018, An Advanced Hand-Held Microfiber-Based Sensor for Ultrasensitive Lead Ion Detection. ACS Sensors, 3, pp. 2506-2512.
“NTU Singapore scientists invent handheld device for quick monitoring of drinking water quality,” Corporate NTU, 15-Apr-2019. Available: https://www.ntu.edu.sg/news/detail/ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality
“NTU Singapore scientists invent handheld device for quick monitoring of drinking water quality,” Edu.sg. Available: https://www.ntu.edu.sg/docs/default-source/corporate-ntu/media-hub/0370-ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality/media-release—ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality.pdf?sfvrsn=9e81a91c_2
“Device for quick monitoring of drinking water quality”, Edu.sg. Available: https://www.ntu.edu.sg/docs/default-source/corporate-ntu/media-hub/0370-ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality/lhwb_190415_5_portable-water-sensor-detects-heavy-metal-contaminants-in-five-minutes.pdf?sfvrsn=1a3e5655_2
“Device for quick monitoring of drinking water quality”, Edu.sg. Available: https://www.ntu.edu.sg/docs/default-source/corporate-ntu/media-hub/0370-ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality/smdn_190415_4_ntu-invention-detects-heavy-metal-contaminants-in-water-in-five-min.pdf?sfvrsn=77ee9aa9_2
“Device for quick monitoring of drinking water quality”, Edu.sg. Available: https://www.ntu.edu.sg/docs/default-source/corporate-ntu/media-hub/0370-ntu-singapore-scientists-invent-handheld-device-for-quick-monitoring-of-drinking-water-quality/lhzb_190416_3_ntu-device-can-quickly-detect-heavy-metals-in-water.pdf?sfvrsn=ce8863f2_2
Compliance with regulations
The level of sensitivity falls within standards of the World Health Organization and of the Environmental Public Health Act in Singapore.
Evaluation methods
The device was evaluated against ICP-MS screened results and known water samples for heavy metal contaminant sensitivity readings including including for Ca2+, Cs2+, Cu2+, Fe2+, Mg2+, Mn2+, Ni2+, Zn2+, and Cd2+, Pb2+.
Other Information
None
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We need to test all parameters pertaining to IS10500 standards, need collaboration and mfg license to make in India