What is Type 3 water and what is it used for?

Type 3 water, also known as RO (Reverse Osmosis) water, is purified water suitable for general laboratory applications such as rinsing glassware, preparing non-critical reagents, and feeding ultrapure water systems. It has significantly reduced levels of ions, organics, and particulates compared to tap water.

How often do the cartridges need to be replaced?

The lifespan of cartridges varies depending on feed water quality and usage volume. Typically, pretreatment cartridges may need replacement every 3-6 months, while RO membranes can last 1-3 years. Units often feature smart monitoring to indicate when replacement is due.

Can this system be connected to a larger water distribution loop?

While primarily designed for point-of-use or small-scale supply, some units can be integrated into a larger system as a pre-treatment stage or to feed a local reservoir. Buyers should confirm specific connectivity options with the seller.

What are the typical installation requirements for this equipment?

Installation typically requires a connection to a potable tap water supply, a drain for reject water, and a standard electrical outlet. Adequate ventilation and a stable surface are also necessary. Specifics should be verified with the seller.

Is this unit suitable for critical applications like cell culture or HPLC?

Type 3 water from this class of equipment is generally not suitable for highly critical applications such as cell culture, HPLC, or molecular biology without further purification. For these applications, Type 1 (ultrapure) water systems are typically required, often fed by a Type 3 system.

Used RioS Essential 24 Water Purification Tank - Pure Steam & Pure Water Systems, photo 1

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Used RioS Essential 24 Water Purification Tank - Pure Steam & Pure Water Systems

used Equipment

Available

Verified seller

Millipore Sigma - RioS Essential 24 Water Purification Tank

Name: RioS Essential 24 Water Purification Tank
Brand: Millipore Sigma
SKU: 50530. 50531. 4A
Availability: InStock

Price: Contact seller for price

This listing is for 1 of 2 Millipore Sigma RioS Essential 24 Water Purification Tank

These units are in full working condition and is ready for immediate use

The RiOs Essential 24 is a compact, efficient RO system that delivers around 480 L/day of consistent Type 3 water. It features minimal maintenance, intelligent self‑management, and smart cartridge monitoring—ideal for routine lab task

Key Performance Specs

Flow Rate: 24 L/hour (≈ 480 L/day) for non-critical lab uses

Purity: Provides Type 3 water with ionic rejection between 95–99% and organic/particulate rejection ≥99% (MW ≥ 200 Da)

Purification Process & Internal Features

Progard® pretreatment cartridge: Removes particles (>1 µm), free chlorine, hardness, and colloids.

High-efficiency RO membrane: Removes dissolved ions, organics, microorganisms, and particulates.

Recovery loop: Recycles a portion of reject water to feed, cutting water waste by over 50% compared to conventional RO systems

Temperature compensation: Automatically adjusts pump pressure to maintain steady flow across 5–35 °C feed water

Design & Operation

Footprint: Compact – 47 cm high × 26.8 cm wide × 33.9 cm deep

Weight: Net weight ~10.9–12.1 kg; Operating weight ~14.4–15.7 kg

Power: 100–230 V AC, 50–60 Hz

Feed water specs: Tap water under 2,000 µS/cm conductivity, 1–6 bar pressure, 5–35 °C, <3 ppm free chlorine, cleanliness index <12

User-Friendly Controls & Maintenance

LCD Display: Color‑coded backlit panel signals system alerts, alarms, and vital stats like product water resistivity and tank levels

Single consumable: One Progard® cartridge per year—easy to swap with ergonomic latch; RFID tracking prevents errors and aids traceability

Self-maintenance: Automated RO flush and membrane protection routines; “Lab Closed” function periodically flushes lines if unused

Data logging: Optional embedded Millitrack™ software offers remote access and data archives

Typical Applications

Ideal for non-critical lab needs such as:

Glassware rinsing

Hydroponics and water baths

Feed for autoclaves, humidifiers, washers

Initial feedstock for ultrapure water systems (e.g., Mill-Q)

Certifications & Compliance

Built in an ISO 9001 & ISO 14001 certified facility. EMC compliance includes CE, cUL, and FCC ®

Installation Flexibility

It’s designed for versatile placement: can sit on a bench, be attached under the bench, or be wall-mounted. Feed connection uses ½″ GAZ M threading

Cambridgeshire, United Kingdom

5,791 km away

Model Number

RioS Essential 24

Stock Number

50530. 50531. 4A

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Applications & Use Cases

Supplying laboratories with purified water for general tasks such as glassware rinsing, media preparation, and buffer formulation.
Providing feed water for ultrapure water systems, ensuring their optimal performance and longevity.
Use in clinical analysers and environmental testing where Type 3 water quality is sufficient.
Suitable for educational institutions and small-scale research facilities requiring consistent purified water.
Pre-treatment for humidifiers, autoclaves, and other laboratory equipment requiring a reliable source of purified water.

Typical Specifications

Typical throughput: For this class of equipment, flow rates commonly range from 10 to 30 litres per hour, providing around 200 to 600 litres per day of Type 3 water.
Water purity: Units of this type typically deliver Type 3 (RO) water, with ionic rejection between 95-99% and high organic/particulate rejection.
Footprint: Compact designs are common, with typical dimensions around 40-50 cm high, 25-35 cm wide, and 30-40 cm deep, making them suitable for benchtop installation.
Power supply: Most units operate on standard single-phase power, typically 100-240 V AC, 50-60 Hz.
Feed water requirements: Units commonly require tap water feed with conductivity below 2,000 µS/cm, pressure between 1-6 bar, and temperatures typically 5-35 °C.
Maintenance: Maintenance for these systems is typically low, primarily involving periodic replacement of pretreatment cartridges and RO membranes, often with smart monitoring features.
Internal features: Commonly found features include integrated pretreatment, high-efficiency RO membranes, and sometimes water recovery loops to minimise waste.

Frequently Asked Questions

Type 3 water, also known as RO (Reverse Osmosis) water, is purified water suitable for general laboratory applications such as rinsing glassware, preparing non-critical reagents, and feeding ultrapure water systems. It has significantly reduced levels of ions, organics, and particulates compared to tap water.

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.