Discovery software for high-purity water

Leave the meeting with a plan.

Eighteen2 turns the first customer meeting into a complete, standards-checked package: the treatment system drawn, the equipment named, the demand sized, a P&ID, and a submittal. Your engineer reviews a finished draft instead of starting from a phone call.

Take the guided demo Start a 30-day trial

30-day trial, no credit card required. Existing customers: Log in. To discuss your team's requirements, contact sales.

Eighteen2 Build tab showing a two-row treatment train from city feed through backflow, PRV, sediment, softener, catalytic carbon, RO, storage, loop pump, DI, UV, and final filter, with the backflow preventer's detail panel open below. — The treatment train for a sterile processing department, tagged component by component, from city feed to the point of use.

Designed against

AAMI ST108
CLSI GP40
ASTM D1193
USP Purified Water
CAP checklist

What we do

One meeting in. A complete package out.

Everything the engineer needs to review, and everything the customer needs to sign, built from a single record so the drawing, the parts list, and the submittal always agree.

Flow path
The treatment train drawn in order, from the city feed and backflow preventer to the last point of use, with every component tagged.
Equipment named
Each step resolved to a manufacturer and part number, with its source shown: verified, suffix to confirm, or spec-and-quote.
Demand sized
Gallons per cycle, cycles per day, and peak flow for the equipment the system feeds, carried through to RO capacity, storage, and loop size.
Chain of custody
Customer, rep, and engineer each confirm their own step. The clock runs from one handoff to the next, so every handoff is timed.
P&ID
A piping and instrumentation diagram with a title block, line list, and instrument tags, ready to print or attach.
Spec check
The design is checked against the standard the site names. Under-design is flagged, and so is over-design the job does not need.
Submittal
Transmittal, compliance matrix, schedules, product data index, deviations, and closeout, assembled from the same record.

Applications

AAMI ST108
Sterile processing
Critical and utility water for washer-disinfectors, sterilizers, and endoscope reprocessing, with the monitoring plan the standard expects.
CLSI GP40 · CAP
Clinical laboratory
Clinical laboratory reagent water (CLRW) and special reagent water for analyzers, with the analyzer maker's feed spec carried alongside.
ASTM D1193
Laboratory reagent water
Type I, II, and III systems for research and QC labs, sized to the bench and polished at the point of use.
USP Purified Water
Pharmaceutical
Purified Water generation and distribution with conductivity and TOC monitoring at the loop return.
Equipment spec
Boiler feed and light industrial
Softened, RO, and CEDI makeup sized to the boiler or process maker's own water table.

How it works

Seven screens in the meeting. A signed scope after it.

The workspace asks what an applications engineer would ask, in the order they would ask it. You name the equipment the water feeds first; those loads set quality and volume before you size the train.

Start
Project, location, room, the customer contact, and the rep. The project link goes to the contact named here.
Application
Sterile processing, clinical lab, reagent water, pharmaceutical, or boiler feed, and the grade the site has to meet.
Equipment
The washers, sterilizers, analyzers, or boilers the water feeds. Name those first; their quality and volume needs drive the demand step next.
Demand
Gallons per day, peak draw, points of use, and loop length, carried straight into RO capacity, storage, and pipe size.
Feed water
Source, TDS, hardness, iron, temperature, and pressure: the inputs that decide pretreatment.
Site
Power in the room and pipe material: the details that sink a proposal when they surface late.
Anything else
Service, parts, or a need this project does not cover, routed to the person who owns it instead of lost in notes.

After the meeting

Build
The system is drawn, equipment is named, and the design is checked against the standard — every assumption stays on screen.
Hand off
The finished package goes to engineering. The engineer revises it and sends it back approved, or with notes.
Confirm and quote
The customer confirms the returned package. Your team writes the quote in its own system; Eighteen2 does not price the job.

Eighteen2 Service

Field service on the same platform.

Eighteen2 Service is for the technician on site: a quick visit or a full train walk, with readings, photos, and items to quote, saved to your team's account as the visit progresses.

Quick visit or full walk
A quick visit asks for the symptom, the surface check, readings, and the components you touched. A full visit walks the whole train in order.
Saved for the team as you go
Visits save to your company's account, not the phone. Anyone on the team can pick one up. If two people edit at once, you are told; nothing is silently overwritten.
Photos and site history
Photos attach to the component they show. Each system keeps its visit history, so this visit's readings sit next to the last one's.
A report the customer can open
Print it, or send the customer a read-only link you can turn off later. Each quote goes to its own inbox, Engineer, Sales support, or Aftermarket, and the team is emailed when one arrives.

Included with every plan and the trial. On a phone, bookmark service.eighteen2.com. Open Eighteen2 Service

Pricing

A subscription for the team that quotes.

Priced by seat, for dealers, integrators, and manufacturers' reps. Customers never need a seat: they open their project from a link.

Solo
$99 per month
or $990 per year
One seat, monthly or yearly
One rep or applications engineer quoting on their own.
- Every application and standard
- P&ID, spec check, and submittal
- Customer project links, no customer seat needed
- Service field visits, reports, and quote inboxes
- Reference sheets and catalog updates
Start a 30-day trial
Most teams start here
Team
$89 per seat per month, billed yearly
$89 for 2–4 seats, $79 for 5–12 seats
Per seat, billed yearly. 2 to 12 seats
Dealers and integrators where reps share an applications engineer.
- Everything in Solo
- Rep, engineer, and customer confirmation chain
- Service visits shared, quotes routed to Engineer, Sales support, or Aftermarket
- Shared saved systems, suppliers, and contacts
- Floor view: where jobs wait, and for how long
Start a 30-day trial
Company
Custom annual license
For 13 or more seats
Volume pricing, multi-branch terms. License covers up to 15 seats; more by agreement
Larger teams, multiple branches, or a manufacturer's rep network.
- Everything in Team
- Your own supplier list and catalogs
- Onboarding with the Eighteen2 team
- Terms set with your team directly
Contact sales

Prices in USD, before tax. Already have an account? Choose a plan in your account. Prefer to see it first? Take the guided demo.

Seats for the people who quote
Reps and applications engineers each get a seat. Customers confirm through a project link and do not need one.
Continuity across the team
Saved systems, supplier choices, and contact cards belong to the team, so a job does not stall when someone is out.
A clock on every package
Handoff times are recorded as the work happens. Over time, the floor view becomes your own record of how discovery runs.
Support from people who know the work
Questions go to a team that has installed and serviced these systems for years.

FAQ

Questions we hear at the first meeting.

Something else? Write to contact.us@eighteen2.com.

What is Eighteen2?

Discovery software for high-purity water. It turns the first customer meeting into a complete package: the system drawn, the equipment named, the demand sized, a P&ID, a spec check, and a submittal, with every handoff timed. The quote is still written in your own system.

Does Eighteen2 replace my engineer?

No. It does the first-draft work: sizing, parts, P&ID, spec check, and submittal layout, with every assumption shown. Your engineer still reviews, changes, and approves the design. The point is that they start from a complete draft instead of a blank page, so each proposal takes less of their time.

Are the designs engineered or stamped?

No. Eighteen2 produces budgetary designs for estimating and proposals, and labels them that way. A licensed engineer or the equipment manufacturer confirms the final design.

Where do prices come from?

Eighteen2 lists part numbers, not prices. RFQs go to your suppliers from your inbox. Price and lead time come back from the supplier, into the quoting system you already use.

Which applications and standards does it cover?

Sterile processing to AAMI ST108, clinical laboratories to CLSI GP40 with CAP checklist items flagged, laboratory reagent water to ASTM D1193, pharmaceutical Purified Water to USP, and boiler feed and light industrial water to the equipment maker's own spec.

Which suppliers are included?

Equipment makers such as Xylem/Evoqua, DuPont FilmTec, Aquafine, Grundfos, and Veolia, and parts suppliers such as Harrington, Ryan Herco, Watts, and GF Signet. You choose which catalogs supply your builds and star the vendors you have agreements with.

Can my whole team use it?

Yes. Eighteen2 is built for teams that share an applications engineer. Reps build the draft, the engineer reviews and approves it back, and the floor view shows where jobs wait. Saved systems are shared across the team.

What does my customer see?

A project link. The customer confirms each section of the discovery from that link before it can go to engineering, and confirms the return when the package comes back. They do not need an account.

How do I get started?

Eighteen2 is a subscription by seat: Solo for one person, Team for reps who share an engineer, and a Company license for 13 or more seats. Take the guided demo, then start a 30-day trial: every feature, up to 3 seats, no credit card required. When the trial ends without a plan, the account becomes read-only and nothing is deleted. For a Company license, contact sales and our team will reply within one business day.

What is Eighteen2 Service?

The field side of the same product. Technicians log site visits (readings, photos, what needs quoting) under the same account and team, and each quote goes to the Engineer, Sales support, or Aftermarket inbox, with an email to the team when it arrives. It is included with every plan. On a phone, bookmark service.eighteen2.com.

Do the reference sheets replace the standards?

No. They are working summaries for reps and engineers, checked against the standards by name. Standards are copyrighted and revised; buy the current edition and confirm limits against it, and against the equipment maker's instructions for use, before you bid.

Screens

See the work, not a mock-up.

A few screens from the designer, with demo data. The guided demo walks the whole flow.

Sizing summary for an ST108 critical water system: RO capacity, feed and reject flow, drain, 500-gallon storage, loop size, and estimated permeate conductivity, with the sterilizer it feeds and a hardness warning for utility water. — **Sizing, sterile processing.** AAMI ST108 critical water, sized from the washer it feeds. The spec check flags feed hardness on the utility water branch.

Sizing summary for a CLSI CLRW deionization system: DI flow, exchange tank volume, gallons per exchange, exchanges per month, storage, and loop size, with notes on worker bank life and pipe material. — **Sizing, clinical lab.** CLSI clinical laboratory reagent water on exchange DI. Eighteen2 shows how often the worker bank exhausts at this feed, and what would change that.

Take the guided demo

Resources

High-purity water reference sheets.

The figures used most often in the field, one page each. Limits are drawn from the same standards record Eighteen2 checks designs against. Print them for the mechanical room.

Seven one-page references for the people who walk the mechanical room. Each prints on its own page.

Sterile processing

AAMI ST108 water quality

ST108 defines two water qualities for device reprocessing. Critical water is for the final rinse and anywhere water touches a device after cleaning. Utility water is for washing, flushing, and intermediate rinses.

Critical water
Parameter	Limit
pH @ 25 °C	5.0 – 7.5
Conductivity	< 10 µS/cm
Total alkalinity	< 8 mg/L as CaCO₃
Total hardness	< 1 mg/L as CaCO₃
Bacteria	< 10 CFU/mL
Endotoxin	< 10 EU/mL
TOC	< 1.0 mg/L
Chloride	< 1 mg/L
Iron, copper, manganese, zinc, aluminum	< 0.1 mg/L each
Nitrate, phosphate, sulfate, silicate	< 1 mg/L each
Color and turbidity	Colorless, clear, no sediment

Utility water (washing, flushing, intermediate rinse)
Parameter	Limit
pH @ 25 °C	6.5 – 9.5
Conductivity	< 500 µS/cm
Total alkalinity	< 400 mg/L as CaCO₃
Total hardness	< 150 mg/L as CaCO₃Soften above this unless detergent chemistry tolerates it.
Bacteria	< 500 CFU/mL< 10 CFU/mL and < 10 EU/mL when used as final rinse after chemical HLD.
Chloride	< 250 mg/L
Silicate	< 50 mg/L

Steam

ST108 also addresses the water used to make steam for sterilization. Size the steam generator's feed to the sterilizer maker's instructions for use and the facility's water management plan, and record which source feeds which sterilizer.

Monitoring at a glance

Conductivity · Daily · After last treatment step
pH, alkalinity, hardness · Monthly · After last treatment step
Bacteria (HPC) and endotoxin (LAL) · Monthly · Loop out and loop return
pH, conductivity, alkalinity, hardness; bacteria and endotoxin · Monthly · First point of use (chemistry); each point of use (bacteria, endotoxin)
Utility water chemistry and bacteria · Quarterly · Treatment system and point of use

Frequencies are the standard's recommended minimums. A water management team and a documented risk assessment are expected.

Laboratory

ASTM D1193 reagent water, Types I–III

Types I, II, and III are defined by ionic, organic, and silica limits. Bacterial subtypes A, B, and C are optional add-ons; ask whether the customer's spec names one.

Parameter	Type I	Type II	Type III
Resistivity @ 25 °C	≥ 18.0 MΩ·cm	≥ 1.0 MΩ·cm	≥ 4.0 MΩ·cm
Conductivity @ 25 °C	≤ 0.056 µS/cm	≤ 1.0 µS/cm	≤ 0.25 µS/cm
TOC	≤ 50 µg/L	≤ 50 µg/L	≤ 200 µg/L
Sodium	≤ 1 µg/L	≤ 5 µg/L	≤ 10 µg/L
Chloride	≤ 1 µg/L	≤ 5 µg/L	≤ 10 µg/L
Silica	≤ 3 µg/L	≤ 3 µg/L	≤ 500 µg/L
Final filtration	0.2 µm	Not specified	0.45 µm

Rules of thumb

Type I is usually made at the point of use: an RO or Type II feed, then a mixed-bed polish, UV, and a 0.2 µm final filter.
Type II: older editions called for distillation; current editions accept any process that meets the limits. Confirm the customer spec does not still require distilled water.
Type III at 4 MΩ·cm is beyond RO alone. Plan a DI polish.

Clinical lab · Pharma

CLSI GP40 and USP Purified Water

CLSI clinical laboratory reagent water (CLRW)
Parameter	Limit
Resistivity @ 25 °C	> 10 MΩ·cm
TOC	< 500 ppbOnline TOC not required; referral-lab testing acceptable.
Bacteria	< 10 CFU/mLViable plate count; endotoxin optional.
Particulates	0.2 µm filtration or finer

Special reagent water (SRW) is set per test by the method manufacturer. Analyzer feed specs can be tighter than CLRW; carry both.

USP Purified Water
Parameter	Limit
Conductivity (Stage 1 @ 25 °C)	≤ 1.3 µS/cm
TOC	≤ 500 ppb
Bacteria (action level)	100 CFU/mL

Conductivity is a three-stage test; Stage 1 is read without temperature compensation, and 1.3 µS/cm applies at 25 °C. Purified Water systems need design qualification and IQ/OQ/PQ.

CAP inspections

CAP inspects against CLSI GP40 or the analyzer maker's spec. The lab defines the water type for each test, reviews resistivity daily, keeps bacterial counts on schedule, and documents every out-of-spec result and its corrective action. Confirm item numbers against the lab's current Laboratory General checklist.

Technology

RO, DI, or CEDI

	Reverse osmosis	Exchange DI	CEDI
What it removes	Most dissolved salts, plus organics, particles, bacteria, and endotoxin	Ions, down to very high resistivity	Ions remaining after RO, continuously
Typical role	Primary treatment ahead of storage	Low flows, polishing, or labs without drain capacity	Chemical-free polish after RO
Needs ahead of it	Sediment filtration, softening or antiscalant, and chlorine removal	Ideally RO; consumption scales with feed TDS	RO permeate within the maker's hardness, CO₂, and chlorine limits
Drain	Yes, continuous reject; recovery set by feed chemistry	None on site	Small concentrate stream
Watch for	Scaling, chlorine damage to thin-film membranes, cold-feed derate	Exhaustion between exchanges, resin fines, bacterial growth; add a post filter	Hardness and CO₂ breakthrough from upstream

Single-pass RO permeate is rarely below a few µS/cm. If the spec needs MΩ·cm, plan a polish.

System design

A typical pretreatment and distribution train

Backflow preventer (RPZ)Required by plumbing code where treatment connects to potable water.
Pressure-reducing valveHolds a steady inlet for the equipment downstream.
Sediment filterCommonly 5 µm. Protects softener valves and carbon beds.
SoftenerTwin-tank for continuous service. Removes hardness that would scale the RO.
CarbonRemoves chlorine. Chloramine needs catalytic carbon and more contact time; size on empty-bed contact time.
ROPump, membranes, and a reject line to drain.
Storage tankWith a hydrophobic vent filter, sized to cover peak demand.
Loop pumpOften duty/standby. Keeps the loop moving.
PolishDI or CEDI when the grade needs it.
UV254 nm for bacterial control; 185 nm when TOC reduction is the goal.
Final filter0.2 µm where the standard calls for it.
Loop and points of useReturn to the tank, with sample valves at the loop out, the return, and each point of use.

Before you select anything, get a feed-water analysis: hardness, alkalinity, iron, silica, TDS, chlorine and chloramine, temperature range, and pressure.

Units

Conductivity, resistivity, and hardness

Resistivity (MΩ·cm) = 1 ÷ conductivity (µS/cm). Use conductivity for treated and utility water, and resistivity once the water is high-purity.

Resistivity	Conductivity	Where it shows up
18.2 MΩ·cm	0.055 µS/cm	Theoretical pure water at 25 °C
18.0 MΩ·cm	0.056 µS/cm	ASTM Type I floor
10 MΩ·cm	0.1 µS/cm	CLSI CLRW floor
4 MΩ·cm	0.25 µS/cm	ASTM Type III floor
1 MΩ·cm	1 µS/cm	ASTM Type II floor
0.77 MΩ·cm	1.3 µS/cm	USP <645> Stage 1 limit at 25 °C
0.1 MΩ·cm (100 kΩ·cm)	10 µS/cm	AAMI ST108 critical water limit
0.002 MΩ·cm (2 kΩ·cm)	500 µS/cm	AAMI ST108 utility water limit

Handy conversions

Hardness: 1 grain per gallon (gpg) = 17.1 mg/L as CaCO₃.
TDS estimate: mg/L ≈ 0.5 to 0.7 × conductivity in µS/cm, depending on the ions present. Use a lab analysis for design.
Temperature: conductivity rises roughly 2% per °C in ordinary water, and faster in high-purity water. Always compare compensated readings.
ppm and ppb: in dilute water, 1 ppm ≈ 1 mg/L and 1 ppb ≈ 1 µg/L.

Sterile processing

SPD equipment: what to ask

For each machine the system will feed, get these before you size anything.

Make and model, and the water spec in its instructions for use
Water quality per connection: utility, critical, or softened; hot or cold
Gallons per cycle and cycles per day, at today's load and planned growth
Peak flow (gpm) and how many machines can fill at once
Inlet pressure range and connection size
Inlet temperature, and whether the machine heats its own water
Drain capacity and location for the treatment equipment
Power available at the equipment room

Equipment that usually needs water

Washer-disinfectors
Steam sterilizers and steam generators
Cart and rack washers
Ultrasonic cleaners
Automated endoscope reprocessors
Manual cleaning sinks and rinse stations

These sheets are working summaries for reps and engineers. They are not a substitute for the current edition of each standard or for the equipment maker's instructions for use, and they are not legal or regulatory advice. Eighteen2 designs are budgetary and are not stamped; a licensed engineer or the manufacturer confirms the final design.

Who we are

Built by people who install and service these systems.

Our team brings 20 years of experience installing and servicing high-purity water systems. Over that time, we saw good proposals stall for the same reasons. The first meeting missed a question. The engineer rebuilt the discovery by phone. Nobody could say who had the job, or for how long.

Eighteen2 is designed for that first meeting. It asks the questions an applications engineer would ask, in the order they would ask them, and documents every result: every sizing rule is written out on screen, and every part number links to the catalog page it came from. The name is a nod to 18.2 MΩ·cm, the resistivity of theoretically pure water.

Budgetary, and says so
Designs are for estimating and proposals. A licensed engineer or the manufacturer confirms the final design.
Assumptions on screen
Every sizing rule is written out where you can read it. When we would do it differently, the verdict says why.
Part numbers, not prices
Eighteen2 lists part numbers. Price and lead time come back on the RFQ from your supplier, into your quoting system.
Your engineer approves
The software does the first-draft work. The engineer still reviews, changes, and approves every design.

Contact sales

Bring us your next job.

Tell us about your team and the work you quote. Our team replies within one business day.

A reply within one business day.
A walkthrough on an application you choose: sterile processing, lab, pharma, or boiler feed.
To evaluate it on your own, start a 30-day trial. No credit card required.

Prefer email? contact.us@eighteen2.com

Want to look first? Take the guided demo

Leave the meeting with a plan.

One meeting in. A complete package out.

Flow path

Equipment named

Demand sized

Chain of custody

P&ID

Spec check

Submittal

Applications

Sterile processing

Clinical laboratory

Laboratory reagent water

Pharmaceutical

Boiler feed and light industrial

Seven screens in the meeting. A signed scope after it.

Start

Application

Equipment

Demand

Feed water

Site

Anything else

Build

Hand off

Confirm and quote

Field service on the same platform.

Quick visit or full walk

Saved for the team as you go

Photos and site history

A report the customer can open

A subscription for the team that quotes.

Solo

Team

Company

Seats for the people who quote

Continuity across the team

A clock on every package

Support from people who know the work

Questions we hear at the first meeting.

What is Eighteen2?

Does Eighteen2 replace my engineer?

Are the designs engineered or stamped?

Where do prices come from?

Which applications and standards does it cover?

Which suppliers are included?

Can my whole team use it?

What does my customer see?

How do I get started?

What is Eighteen2 Service?

Do the reference sheets replace the standards?

See the work, not a mock-up.

High-purity water reference sheets.

Steam

Monitoring at a glance

Rules of thumb

CAP inspections

Handy conversions

Equipment that usually needs water

Built by people who install and service these systems.

Budgetary, and says so

Assumptions on screen

Part numbers, not prices

Your engineer approves

Bring us your next job.