ClearWater Tech LLCClearWater Tech LLCEcoTex - Advanced Laundry Oxidation SystemsEcoTex - Advanced Laundry Oxidation Systems

Laundry Cycles and Chemistry

Laundry Cycles and Chemistry

Goals

- Provide background information

- Provide an understanding to assist those whom will be designing the formulas

Overview

• Terminology

• Traditional Cycle and Chemistry

• Ozone Cycle and ChemistryQuickTime™ and a

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Terminology

• Wash Cycle

- Consists of all fills, drains, and steps; a complete wash

• Wash Steps

- The individual components that make up a wash cycle, ie: Suds, bleach, rinse, etc.

• Formula- Relating directly to chemistry. The addition or combination of different types of chemicals

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Traditional Cycle and Chemistry

Hot water…it works…sometimes

• Hot water used for thermal disinfection of linen

• Does eliminates SOME bacteria

• Does NOT eliminate Super -Bugs- Methicillin-resistant Staphylococcus aureus (MRSA) - Clostridium difficile (C. diff)

• Leaves linen contaminated after wash, to be reused

Traditional Cycle and Chemistry - continued

Flush• Purpose

- Pre-rinse or Pre-wash linen - Used for heavily soiled linen

• Traditional Formulas- May include alkali to increase pH- May include detergent for heavily soiled linen

Traditional Cycle and Chemistry - continued

Alkali/Base• Purpose

- Increase pH levels

- Relax the linen and open fibers

• Traditional Formulas– pH can be increase to 12 and GREATER

Traditional Cycle and Chemistry - continued

Detergent• Purpose

- Suds are used to encapsulate soil

- Lift soils away from the linen

- Built-detergents include alkali to increase pH, eliminating the need for separate alkali

• Traditional Formula

- No bubbles …. Add detergent

- A lot of large bubbles …. Reduce detergent

- Small tight bubble…. Correct amount

Traditional Cycle and Chemistry - continued

Chlorine• Purpose

- To disinfect- To bleach bleachable stains

• Traditional Formula- Start wash at 150ppm chlorine- Burn off to 50 to 30 ppm by end of step- Chlorine’s Effects are controlled by:

• pH level

• Water temperature • Time

- Bleach step maybe added to the detergent step, low soil linen only

Traditional Cycle and Chemistry - continued

Rinse• Purpose

- To rinse out detergent from linen- To reduce pH in linen- Thermal disinfection

• Traditional Formula- 2 to 3 minutes of hot or warm water- May include sour or softener

Traditional Cycle and Chemistry - continued

Sour/Acid• Purpose

- To reduce pH at the end of the wash cycle

- Souring chemicals leave linen rough to the touch

• Traditional Formula

- pH at end of cycle; 6.0 to 7.0; human skin 6.5 pH

- Rinse steps can be added to reduce pH and the use of souring chemicals

Traditional Cycle and Chemistry - continued

Softener• Purpose

- Coats linen to make it feel soft do to harsh effects of sour

- Softeners can trap water in the linen fibers, increasing dry time

• Traditional Formulas

- Used after the souring process or maybe a combined chemical with the sour

Traditional Cycle and Chemistry - continued

Extract• Purpose

- To extract water from linen through high speed spin

- Reduce drying time

• Traditional Formulas

- 3 to 5 minutes

Ozone Cycle and Chemistry

Cold water/Ozone…it works…all the time• Ozone cycles primarily use cold-water

• This is possible due to the oxidizing and disinfection power of ozone gas

• EcoTex - Continuous delivery of ozone throughout the duration of each step in the wash cycle

• Yields bacteria and virus inactivation levels far superior of wash

performed in hot water

• Ozone is not a cure-all; chemicals are needed to wash linen!

• FOG - Fats, Oils and Grease, still require hot water wash steps

O3O3

Ozone Cycle and Chemistry - continued

Flush• Purpose

- Pre-rinse or Pre-wash linen

- Used for heavily soiled linen

• Ozone Formulas

- May include alkali to increase pH

- May include detergent for heavily soiled linen

- Allows ozone more time to oxidize soils

Ozone Cycle and Chemistry - continued

Alkali/Base• Purpose

- Increase pH levels- Relax the linen and open fibers

• Ozone Formula- Ozone’s oxidative power is greater with lower pH levels (7.0 to 10.0)- Separate Alkali may be eliminated with the use of Built-detergents- Subjective testing ozone itself reacts in the same fashion as the alkali by helping to relax the linen, which opens the fibers

Ozone Cycle and Chemistry - continued

Detergent

• Purpose- Suds are used to encapsulate soil

- Lift soils away from the linen

- Built-detergents include alkali to increase pH, eliminating the need for separate alkali

- Detergent aides in the mechanical function of removing soils

- Without detergent soil may remain in the fabric, leaving the linen dirty

Ozone Cycle and Chemistry - continued

Detergent - Continued

• Ozone Formulas- Ozone oxidizes soil in linen allowing them to

detach easier. This enables the detergent to encapsulate the soil easier

- Laundry professionals concern with ozone wash programs, Yellowing….

• Cause: too much detergent used or insufficient removal of detergent

• Remedy: reduce the amount of detergent used, allowing for longer rinse times or adding more water and time during the rinse step(s)

- No bubbles …. Add detergent- A lot of large bubbles …. Reduce detergent- Small tight bubble…. Correct amount

Ozone Cycle and Chemistry - continued

Chlorine• Purpose

- Bleachable stains- Bleach will NOT be required for disinfecting

• Ozone Formulas- The only step with hot water

- Start wash at 150ppm chlorine- Burn off to 30 to 50 ppm by end of step- Chlorine’s Effects are controlled by:

• pH level

• Water temperature • Time

- Bleach step maybe added to the detergent step, low soil linen only

Ozone Cycle and Chemistry - continued

Rinse• Purpose

- To rinse out detergent from linen- To reduce pH in linen- Ozone disinfection

• Ozone Formula- 2 to 3 minutes of cold water- May include sour or softener

Ozone Cycle and Chemistry - continued

Sour/Acid

• Purpose

- To reduce pH at the end of the wash cycle

- Souring chemicals leave linen rough to the touch

• Ozone Formulas- Ozone formulas do not require high pH levels,

therefore souring chemicals can be reduced or eliminated

- Rinses can be an effective way to reduce pH to levels suitable for the skin, typically in the range of 6.0 to 7.0

- Less sour reduces the rough feeling of linen

Ozone Cycle and Chemistry - continued

Softening• Purpose

- Coats linen to make it feel soft do to harsh effects of sour

- Softeners can trap water in the linen fibers, increasing dry time

• Ozone Formulas- Softeners can often be reduced or even

eliminated completely from ozone formulas- Reduction or elimination of softeners can

provide a reduction of drying times

Ozone Cycle and Chemistry - continued

Extract• Purpose

- To extract water from linen through high speed spin

- Reduce drying time

• Ozone Formulas

- 3 to 5 minutes

Cycle Comparison

Chemical SignalsS1 - Break (Soil Buster)S2 - Detergent (Premium Power Surge)

S3 - Bleach (Aqua Bright)S4 - Sour/Soft (Soft Balance)S9 - Ozone

STEP TEMP LEVEL TIME S1 S 2 S 3 S 4 S 9 STEP TEMP LEVEL TIME S1 S 2 S 3 S 4 S 91 SUDS H M 8 20 3 1 SUDS/BLEACH H M 5 14 3 10 52 BLEACH H M 7 13 2 RINSE C H 2 23 RINSE H H 2 3 RINSE C H 2 24 EXTRACT H3 2 4 FINAL RINSE C M 2 3 25 RINSE W H 2 OZONE OFF 16 FINAL RINSE W M 3 3 5 EXTRACT H3 67 EXTRACT H3 5

Total Cold Water: 0 Total Cold Water: 82Total Warm Water: 52 Total Warm Water: 0Total Hot Water Gallons: 74 Total Hot Water Gallons: 22Total Gallons: 126 Total Gallons: 104Total Time (min): 29 0 Total Time (min): 18 11Totals Time (Sec): 20 3.0 13.0 3.0 Totals Time (Sec): 14.0 3.0 10.0 3.0

4 0.6 2.6 0.6 2.8 0.6 2.0 0.6Total Chemical Used/Wash (OZ): 7.8 6.0

TRADITIONAL CYCLES EcoTex™ CYCLES

Total Chemical Used/Wash (OZ):

PROGRAM: 01 Sheets PROGRAM: 01 Sheets

Total Chemical Used/Signal (OZ): Total Chemical Used/Signal (OZ):

Chemistry Guide

EcoTex - Ozone laundry Formula Guide