Due to a death in our organization we have temporarily changed our ordering procedures.
We are now allowing phone in orders for in-stock items only, paid with a credit card.
We are not currently accepting purchase orders.
Existing orders will be processed.
Thank you for your understanding.

At what megohm reading do you change lab water filters.

Your Cart

Shopping Cart Items: 0   Sub-Total : US$0.00    View Cart    Checkout
Shopping Cart Items: 0   Sub-Total : US$0.00
Welcome, Guest ( Login )
Celebrating 34 years providing high quality products and advice.
Our Local Time Is 3:31:46 PM.
Call us at 818-786-0600. We are here to help!
Lab Water System ON SALE NOW
Introducing the Polaris Lab Water Systems
High Purity Water Made In The USA.
Click here for more info.
Laboratory Water Systems Laboratory Process Filters Laboratory Equipment Water Treatment

At what megohm reading do you change lab water filters.

Date : 8/17/2016
From : carlos

Question

Hi in cartridge replacement when the resistivity of the water drops below the desired level replace all cartridges with new one so what is the resistivity level who determent that thanks

Answer

What matters is your own procedures as to what purity you need. Generally you set a specification and an action limit. Some application require 18 megohm so if it is lower you would change the filters. Other may need only 10 megohm or even 2 depending on the water specifications selected. Most laboratory application require type I water.

Here are some laboratory water specifications :

https://www.apswater.com/article.asp?id=317&title=Laboratory+Water+Quality+Specifications



View Q&A list

See Other Technical Articles


APS Scientific Products



Laboratory Water Purification
Quick View

Main Categories

Most Popular

Technical Information
  • Laboratory Water Systems
  • Laboratory Water Filters
  • Laboratory Water Distillers
  • Barnstead Lab Water Systems
  • Hose Barb Filters
  • See All Lab Water Products
  • Filters For Millipore Systems
  • Filters For Barnstead Systems
  • Barnstead Lab Water Systems
  • MicroPure Lab Water Systems
  • Polaris High Flow Water Systems
  • Bottled Lab Water
  • Laboratory Equipment
    		•
  • Lab Water Specifications
  • About Lab Water Applications
  • Barnstead Water Manuals
  • Glossary Of Pure Water Terms
  • Basic Lab Water Contaminants
  • Medicine and Research Water
  • See All Articles


    • Laboratory Equipment
    Quick View
    Main Categories Most Popular Technical Information
  • Glassware Washers
  • Chemical/Biological Fume Hoods
  • Freeze Dry Systems
  • Forensic Enclosures
  • ScrubAir Pipette Washer Dryers
  • See All Laboratory Equipment
  • Evidence Drying Cabinets
  • Fingerprint Fuming System
  • Basic Laboratory Hoods
  • Console Freeze Dry Systems
  • Steam Scrubber Glassware Washers

    		•
  • Lab Water Specifications
  • See All Articles
    		•
    Open To The Public

    Why Use APS??

    Independent Reps Wanted

    Need Live Help?

    Contact Us
    818-786-0600

    Short Lead times.
    Lab Water Deionizer




    P12XL4
    APS Polaris XL 4 Lab Water System

    Retail Price : US$6,499.00
    Todays Price : 0



    P2D2-M
    APS Polaris D2 Water System with Quality Meter

    Retail Price : US$2,966.00
    Todays Price : 0



    P2D3-M
    APS Polaris D3 Water System with Quality Meter

    Retail Price : US$3,496.94
    Todays Price : 0



    P2D1-M
    APS Polaris D1 Water System with Quality Meter

    Retail Price : US$2,118.94
    Todays Price : 0
    PreviousNext
    APS Polaris XL 4 Lab Water System
    APS Polaris XL 4 Lab Water System


    TAKING PRE-ORDERS
    Short lead Time. 


    This high capacity four housing lab water system is designed to provide up to 3 l.p.m. of ultrapure water exceeding ASTM and CAP Type I, II or III specifications.

    See all Polaris Systems Here

    PROUDLY MADE IN THE USA


    0 Details
    APS Polaris D2 Water System with Quality Meter
    APS Polaris D2 Water System with Quality Meter

    This dual housing water system is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Comparable to Barnstead D4521

    Operating Manual

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

    Dimensions :  18" W X 28" H X 6" D

    0 Details
    APS Polaris D3 Water System with Quality Meter
    APS Polaris D3 Water System with Quality Meter

    This high capacity triple housing is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Operating Manual

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

    Dimensions : 23" W X 28" H X 6" D

    0 Details
    APS Polaris D1 Water System with Quality Meter
    APS Polaris D1 Water System with Quality Meter

    This compact single housing is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Comparable to Barnstead D4511

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

    Dimensions : 12" W X 28" H X 6" D

    Operating Manual

    0 Details
    PreviousNext

    Best
    Lab Water System




    50132372
    Barnstead MicroPure UV/UF-ST

    Retail Price : US$8,050.00
    Todays Price : US$7,164.50



    50132373
    Barnstead MicroPure UV

    Retail Price : US$6,950.00
    Todays Price : US$6,185.50
    PreviousNext
    Barnstead MicroPure UV/UF-ST
    Barnstead MicroPure UV/UF-ST

    Barnstead MicroPure Laboratory Water Purification System - Provides Type I Ultrapure Water.

    Systems come with the filters. Does not require a permanent feed source. Portable. Just pour tap or treated water into the internal reservoir to produce ultrapure water. 

    Replacement filters

    This is the replacement for the popular EasyPure UV/UF RF systems.

    Operating Manual

    US$7,164.50 Details
    Barnstead MicroPure UV
    Barnstead MicroPure UV

    Barnstead MicroPure Laboratory Water Purification System - Provides Type I Ultrapure Water.

    Systems come with the filters.

    Replacement filters

    This is the replacement for the popular EasyPure UV LF systems.

    Operating Manual

    US$6,185.50 Details
    PreviousNext

    Top Sellers




    MB1801
    High Purity Mixed Bed Deionizer

    Retail Price : US$221.00
    Todays Price : US$149.80



    GSX28
    O-RING 4.190IDX.139 EPR 50

    Retail Price : US$17.40
    Todays Price : US$15.49



    D0809
    CARTRIDGE ULTRAPURE SPG

    Retail Price : US$224.00
    Todays Price : US$199.36



    Res Care-G
    Pro Res Care Cleaner Chemical Case of 4

    Retail Price : US$152.85
    Todays Price : US$113.22



    CF10D1
    Activated Carbon Filter

    Retail Price : US$25.65
    Todays Price : US$19.04



    SB1801
    High Capacity Dual Bed Cartridge Filter

    Retail Price : US$205.00
    Todays Price : US$143.50



    D50237
    Barnstead Easy Cool Filter - Upflow

    Retail Price : US$104.00
    Todays Price : US$96.72



    HC19H1-D
    IWT 3C0600002 Style High Capacity Filter - Cartridge Universal II

    Retail Price : US$135.06
    Todays Price : US$109.25
    PreviousNext
    High Purity Mixed Bed Deionizer
    High Purity Mixed Bed Deionizer

    Removes ionic contamination from water.

    Comparable to Barnstead D0809 and D5027 Ultra Pure Mixed Bed Filter. vp-17-4010

    US$149.80 Details
    O-RING 4.190IDX.139 EPR 50
    O-RING 4.190IDX.139 EPR 50

    Factory Original - Use with E-pure, B-Pure and Nanopure Quad systems and housings only. 1/pk AKA GSX-28



    US$15.49 Details
    CARTRIDGE ULTRAPURE SPG
    CARTRIDGE ULTRAPURE SPG

    Barnstead Brand Filter
    Comparable to APS Ultra Brand MB1801 filter cartridge, D0808 and vp-17-4010

    US$199.36 Details
    Pro Res Care Cleaner Chemical Case of 4
    Pro Res Care Cleaner Chemical Case of 4

    Case - 4 ea 1 gallon bottles. Same as Res-Up
    Chemical Feeders
    Pro-Res-Care is the pro version Res-Up.
    This item can not be shipped by air freight.

    US$113.22 Details
    Activated Carbon Filter
    Activated Carbon Filter

    Code F, 2.5 inch X 10 inch. Coconut shell carbon block with 10 micron outer wrap. Special Prep 1, for Chlorine removal with low extractable applications - 1/pk
    Filter Housing

    US$19.04 Details
    High Capacity Dual Bed Cartridge Filter
    High Capacity Dual Bed Cartridge Filter

    Reduces dissolved inorganic contamination.

    Comparable to Barnstead D0803 and Harvey AY1273X4 High Capacity Filters.

    US$143.50 Details
    Barnstead Easy Cool Filter - Upflow
    Barnstead Easy Cool Filter - Upflow

    Easy Cool Deionizer Filter - Comparable to APS ULTRA Brand EF06U1

    US$96.72 Details
    IWT 3C0600002 Style High Capacity Filter - Cartridge Universal II
    IWT 3C0600002 Style High Capacity Filter - Cartridge Universal II

    This High Capacity Mixed Bed Deionization Filter is used for the reduction of dissolved minerals. with Color Indicator - Comparable to IWT and US FILTER 3C0600002 and HC200 or HC-200

    US$109.25 Details
    PreviousNext

    Most Popular
    Fume Hoods




    100400020
    4' Protector Premier Laboratory Hood

    Retail Price : US$10,555.00
    Todays Price : US$9,499.50



    100400040
    4' Protector Premier Laboratory Hood

    Retail Price : US$13,630.00
    Todays Price : US$12,267.00



    100400041
    4 foot Protector Premier Laboratory Hood

    Retail Price : US$14,760.00
    Todays Price : US$13,284.00



    100400060
    4' Protector Premier Laboratory Hood

    Retail Price : US$13,630.00
    Todays Price : US$12,267.00
    PreviousNext
    4' Protector Premier Laboratory Hood
    4' Protector Premier Laboratory Hood

    Labconco Brand Product 

    US$9,499.50 Details
    4' Protector Premier Laboratory Hood
    4' Protector Premier Laboratory Hood

    Labconco Brand Product - with built-in exhaust blower

    US$12,267.00 Details
    4 foot Protector Premier Laboratory Hood
    4 foot Protector Premier Laboratory Hood

    with built-in blower with 2 service fixtures, 100-115V, 60 Hz

    US$13,284.00 Details
    4' Protector Premier Laboratory Hood
    4' Protector Premier Laboratory Hood

    Labconco Brand Product - with built-in exhaust blower

    US$12,267.00 Details
    PreviousNext

    Glassware Washers

    PreviousNext
    PreviousNext

    Best New Product
    Lab Water Reverse Osmosis System

    Lab/Commercial
    Reverse Osmosis System
    Great for Lab Water Pretreatment
    or Great Drinking Water
    Images are representative of the products. Images may or may not be of the actual product. If it is important e-mail us for an actual image if available.

    * Flat Rate UPS shipping when able to ship via UPS and is in the USA excluding Hawaii and Alaska.
    Larger Items may not be able to ship via UPS, in that case freight charges will be quoted seperately.
    International shipping will be quoted after the order is placed. You will have the opportunity to cancel before we finalize your order.

    Terms and conditions
    Credit Application
    Privacy Policy
    List All Products