Updated on January 3, 2024

·

Created on August 3, 2016

M-Drop

MDrop or MadiDrop is a water disinfection tablet.

Tested By
  • Department of Civil and Environmental Engineering, University of Virginia
Content Partners
Unknown

Product Description

The M-DropĀ is a porous ceramic tablet embedded with silver and/or copper nitrate. It is placed in a household drinking water storage container for water disinfection.

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 3: Good Health and Well-Being

Market Suggested Retail Price

$20.00

Target Users (Target Impact Group)

Household

Distributors / Implementing Organizations

Non-governmental organizations, Universities, Faith-Based Organizations and Private Parties includingĀ Agua y Vida,Ā Wine to Water,Ā Ultimate Mission,Ā &Ā St Paul's Episcopal Church.

Regions

Worldwide

Manufacturing/Building Method

M-Drop tablets are manufactured from clay, sawdust, silver and/or copper nitrate, pressed into shape and fired to a ceramic state

Intellectural Property Type

Patent

User Provision Model

Users can obtain the product from organizations, agencies and private parties includingĀ Agua y Vida,Ā Wine to Water,Ā Ultimate Mission,Ā St Paul's Episcopal Church.

Distributions to Date Status

Unknown

Active Chemical and concentration (%)

Ceramic tablet embedded with silver and/or copper nitrate

Form

Tablet

Dosing method: Batch or flow-through

Batch

Dosing method: Automatic or manual

Manual

Dosing quantity

One M-Drop tablet per 10 L of water

Contact time (min)

Minimum 600; 10 – 24 hours depending on water quality to be treated.

Target free disinfectant residual (mg/L)

Target silver ion concentration is <0.1 mg/L

Bacteria reduction

6 log

Virus reduction

1 log

Protozoa reduction

Unknown

Heavy metals and/or arsenic reduction

Unknown

Treatment lifespan (days)

The M-Drop remains in the water storage container, when more water is added, the MadiDrop will continue working and lasts for 6 months or longer.

Maximum recommended influent turbidity level (NTU)

Not Applicable

Design Specifications

M-Drop is a small tablet of porous clay embedded with silver. When placed in water silver ions are released gradually and disinfect waterborne pathogens. Silver concentration is below 0.01 mg/L and a 6 log in bacteria reduction and 1 log virus and protozoa reduction can be achieved after 10-24 hours, depending on how contaminated the water is.

Additional specifications: Weight: 50 grams; Length: 9.0cm; Height: 1.7; cm; Width: 3.5 cm.

Product Schematics

Technical Support

The M-Drop is placed in the water storage container and left there for 6 months. The user should avoid moving the M-Drop from container to container as this will reduce its effectiveness. The M-Drop works best when left in a container for at least several days, preferably weeks and months. The water storage container can be cleaned as needed. The M-Drop should be handled as little as possible to prevent the oil on skin from clogging the pores but it can be cleaned by rubbing it between hands, or gently scrubbing it with a clean brush. The user must remember to replace the M-Drop after 6 months.

Replacement Components

A supply chain is needed to purchase additional or replacement MadiDrops locally.

Lifecycle

Approximately 6 months; To discard a M-Drop users need to simply throw them away into the trash, or break it into pieces and disperse them on the ground.

Manufacturer Specified Performance Parameters

Performance targetsĀ 6 log bacteria removal, 1 log virus and 1 log protozoa removal.

Vetted Performance Status

Porous Ceramic Tablet Embedded with Silver Nanopatches for Low-Cost Point-of-Use Water Purification,Ā Performance and Acceptance of Novel Silver Impregnated Ceramic cubes for Drinking Water Treatment in Two Field sites: Limpopo Province, South Africa and Dodoma region, Tanzania

Safety

Manufacturer reports silver elution is below USEPA secondary guideline values of 0.1 mg/L.

Complementary Technical Systems

Can be used in conjunction with boiling or filtration technologies to prevent post-treatment contamination during storage.

Compliance with regulations

Depends on local market regulations.Ā MadiDrop offers supportĀ to distributors and resellers to obtain local certification.

Evaluation methods

Field & Laboratory evaluations, see academic research.

Other Information

Video on M-Drop.

Comments from the Community

1 Comment

  1. E4C.COMMENTS says:

    Emily says:

    Distribution to date: the published number on their website is 664.

Leave a Reply

Explore similar solutions

Agriculture

December 27, 2023

AquaFilter Family

Read Solution

Implemented by

Aquabox, UK

Agriculture

January 11, 2024

CeraMaji

Read Solution

Implemented by

Kenya Ceramic Project (KCP)

Agriculture

January 8, 2024

DayOne Waterbag

Read Solution

Implemented by

DayOne Response

Agriculture

December 29, 2023

LifeStraw Family 2.0

Read Solution

Implemented by

LifeStraw

Agriculture

January 4, 2024

Tulip Table Top Filter

Read Solution

Implemented by

Basic Water Needs

Agriculture

January 2, 2024

WateROAM ROAMfilter Lite

Read Solution

Implemented by

wateroam

Agriculture

December 27, 2023

ACI Household Filter

Read Solution

Implemented by

Aqua Clara International

Agriculture

January 10, 2024

DHAN Biosand Filters

Read Solution

Implemented by

Dr. David Manz, University of Calgary

Agriculture

January 11, 2024

Kohler Clarity Water Filter

Read Solution

Implemented by

Kohler

Agriculture

January 11, 2024

Berkey Ceramic Filters

Read Solution

Implemented by

New Millennium Concepts, Ltd

All Solutions

Contribute to E4C's Library of Breakthrough Sustainable Development Technology Solutions

Suggest A Solution

Get more information about Solutions Library and its features.

Learn More

Have thoughts on how we can improve?

Give Us Feedback

Join a global community of changemakers.

Become A Member