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Point-of-Use Glassware Washers Presentation


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  • 1. Point-of-Use Glassware Washers
  • 2. COPYRIGHT NOTICE The material included in this presentation is copyright of Labconco Corporation. Reproduction or use of the slides is not permitted without express permission from Labconco Corporation.
  • 3. Learning Objectives How to choose the correct washer Specifications that are important to glassware washer users Cost of machine washing vs. hand washing
  • 4. Types of Glassware Washers Three types of Laboratory Glassware Washers Bench top: Sits on the bench, limited features, low capacity – single level rack Point of Use: Free standing or under counter, medium capacity – upper and lower racks, features such as pure water rinse, spindle racks or open racks. Central: Large, free standing model, high capacity – up to 5 racks, features such as pure water rinse, hot water temperatures up to 205F, spindle or open racks. Economy (low features, bench top) $4,000 and under Mid-range (point of use with features specific for laboratory use) $4,000 to $11,000 Advanced (higher-end features such as automatic detergent dispense, HEPA air drying) $11,000 and up Large capacity (Central location washers) Up to $50,000
  • 5. Market Applications Glassware washers are a logical solution for any lab using at least 25 pieces of reusable glassware and plastic ware daily. Analytical labs can program “wash protocols” and have consistent, repeatable results.
  • 6. Manual Cleaning
  • 7. Three Steps of Manual Cleaning Soaking in Immersion Bath Best if washed immediately after use Water and detergent added Potential overnight soaking to remove stubborn residue
  • 8. Three Steps of Manual Cleaning Rinsing Rinse in separate container with drinking grade water or pure water to prevent cross contamination
  • 9. Three Steps of Manual Cleaning Drying Can be done in autoclave or drip board
  • 10. Automatic Cleaning – Residential Washer Heated wash water only up to 140ºF in most models, 160ºF at the most Pure water rinses are not available Engineered to remove food and beverages, not agar, media and solvents Racks are designed to hold dishes and cups, not pipettes, Erlenmeyers, etc. Detergents generally contain phosphates, which alter laboratory results Warranty is voided if installed in commercial applications
  • 11. Laboratory Glassware Washers Cycle Components Wash cycles Pre-wash rinses glassware Wash cycle adds detergent • Detergents work better with hotter water. Hot water wash temperatures react with laboratory detergents to clean glassware. Steam removes tough, dried-on soil
  • 12. Laboratory Glassware Washers Cycle Components Pure water rinse For analytically clean glassware Heated pure water cleans better than non- heated Dry Cycle Better drying = less handling of glassware No transferring wet glassware to a drying oven or drip board
  • 13. Selecting the proper laboratory washer Questions to ask: What type of glassware are you using? • Narrow neck or wide mouth What is the soil level in the glassware? • Heavy, viscous or thick: i.e., media, agar, waxes, etc. • Light, general laboratory soil, liquid chemicals, aqueous, etc. Are you using any acids? Does your glassware need to be dry out of the washer?
  • 14. Effects of Residue on Laboratory Glassware Ghost peaks can appear in a chromatogram Surfactant residue can impair or prevent the growth of bacteria and cell cultures Potential cross contamination Residue traces can catalyze or make chemical syntheses impossible Glassware can become etched or corroded from residue alkaline
  • 15. Automated cleaning using a laboratory glassware washer Wash water should be heated up to 199°F, tap water generally is set to 110°F in most laboratories Results should be reproducible each time No need for overnight soaking Controlled use of detergents Less handling of glassware = less breakage Does glassware washer offer forced air drying? How long is drying cycle? Save water usage 13.6 gallons glassware washer vs. 20 gallons hand washing
  • 16. What features should I look for? Glassware racks specific for laboratory glassware Injector spindles for narrow neck glassware Open racks for wide mouth glassware Optional inserts for pipettes, culture tubes, Petri dishes Hot water heater to heat water up to 199ºF for sanitization
  • 17. What features should I look for? Forced air dry cycle through spindles to ensure dry glassware after wash cycle Internal component materials to withstand laboratory chemicals
  • 18. Selecting the proper laboratory washer Other considerations - costs Hand washing vs. Machine washing Hand washing uses more water and detergent than machine washing Different variables in hand washing can lead to different levels of cleanliness day to day Shell washers vs. fully equipped washers Less expensive on paper, but racks are needed for the washer to operate. Costly in the end. What type of detergent is needed A glassware washer uses less detergent than hand washing
  • 19. What if I am worried about particulate contamination? Possible contamination may come during the forced air drying since air is pulled from the room, heated and forced into the washer. If the washer uses a HEPA filter before the forced air drying, the particulates are removed. HEPA Filter
  • 20. What washer works best for beakers? A laboratory glassware washer equipped with standard upper and lower baskets Inserts allow customization of the glassware for Petri dishes, culture tubes, utensils, etc.
  • 21. What features should I look for? High water circulation rates - greater than 96 gallons/minute Hot water heater to heat water up to 199ºF for sanitization Pure water rinse option Pure water pump, pressurized pure water not required Ability to heat pure water rinse
  • 22. What features should I look for? Wash arms on each level including middle wash arm if upper rack is used Forced air dry cycle to ensure dry glassware after wash cycle Internal component materials to withstand laboratory chemicals
  • 23. A washer for flasks or washer for beakers? Which to choose? Interchangeable racks give flexibility to run a combination of glassware Removable spindles Spindle racks can do narrow neck flasks as well as pipettes Open racks will run wide mouth glassware, test tubes, Petri dishes
  • 24. Selecting the proper laboratory washer Tertiary Considerations - The Options Accessory options… Spindle rack or open rack for washers that allow interchangeable racks Inserts to customize washer
  • 25. Selecting the proper laboratory washer Tertiary Considerations - The Options Accessory options: Liquid detergent dispenser • Washer hooks up to liquid detergent; which is dispensed during the wash cycle. Exact amount of detergent is used every time.
  • 26. Selecting the proper laboratory washer Tertiary Considerations - The Options Accessory options: Drain water cooling kit • Cools water to < 60ºC in municipalities where hot drain water is not allowed Glassware cart to load and unload directly from the washer
  • 27. Water Softener—is it necessary? Use of a water softener may be recommended if the water is 140ppm or greater. Most water is less than 140ppm. Water softener is not required. 1mg/L = 1 ppm
  • 28. Can pure DI water be used with a glassware washer? Pure DI (deionized) water works with glassware washers. By the time the DI water gets to the washer, it is no longer as pure as it started in the tank. DI water does not leach the steel out of the washer. DI water can also be hooked up to the Tap Valve as long as it is pressurized and heated
  • 29. It’s not easy being green… Some washers have an 8-hour delay to wash during non-peak hours to save on electricity. Water usage Too little water creates a dirty wash environment Too much water is a waste of detergent, water and energy How much of the washer parts can be recycled? Are service parts easily available? Allow reuse of expensive glassware vs. disposable. Is the washer manufactured in the ? Are parts, customer service and sales reps readily available to you?
  • 30. Regulatory Agencies Electrical Testing Laboratories (ETL) mark is accepted by AHJs and retailers across North America as a product's mark of compliance to applicable electrical, gas and other safety standards. and accredited as a Testing Organization and Certification Body by the Standards Council of the U.S.A. and Canada. UL evaluates more than 19,000 types of products, components, materials and systems. UL's worldwide family of companies and network of service providers includes laboratory, testing and certification facilities.
  • 31. Labconco Corporation 8811 Prospect Ave. Kansas City, MO 64132 1-800-821-5525 816-333-8811