HAND DRYER STUDY

HAND DRYER BACTERIA AND FUNGUS DISTRIBUTION STUDY

PREPRINT [1] – Transmission of Bacteria and Fungus via Dyson and
Xlerator Hand Dryers in Starbucks, Home Depot and
Whole Foods Restrooms: A Comparative Analysis

HAND DRYER CLAIMED DRYING TIME RESIDUAL MOISTURE STUDY

PREPRINT [2] – Testing the Validity of Hand Dryer Drying Time
Specifications: A Quantitative Study of Dyson and Xlerator Dryers in Retail Store Environments

HAND DRYER WATER DISTRIBUTION AND AEROSOLIZATION STUDY

PREPRINT [3] – Visual Analysis of Water Dispersion Patterns During Hand Drying: A Qualitative Comparison of High-Speed Air Dryers and Paper Towels

WHITE VS BROWN PAPER TOWEL STUDY

PREPRINT [4] – Bacterial and Fungal Contamination Assessment of
Paper Towel Types: A Quantitative Analysis of White Versus Brown Varieties in Retail Restrooms

TIME-TO-DRY RESIDUAL MOISTURE STUDY

PREPRINT [5] – Systematic Performance Failure in Commercial Hand Dryers: A Large-Scale Quantitative Analysis of Time-To-Dry on Hands in Dyson and Xlerator Hand Dryers in Public Restrooms

HOW MUCH WATER IS ON HANDS AFTER WASHING?

PREPRINT [6] – Baseline Water Mass on Freshly Washed Hands: Establishing Reference Values

REFUTATION OF HAND DRYER ENERGY CLAIMS

PREPRINT [7] – An Empirical Refutation of Green Energy Claims for Dyson and Xlerator Hand Dryers in Use in Public Restrooms

DEFINITIVE HAND DRYER RESIDUAL WATER RESULTS WITH THREE COMPLETE DATA SETS

PREPRINT [8] – Catastrophic Time-To-Dry Failures by Dyson, Excel and World Dryer Hand Dryers via the Bulk Water and Bound Water Mechanism: A Comprehensive Definitive Analysis

A COMPLETE RETEST OF RESTROOM AIR, HAND DRYER, AND PAPER TOWEL MICROBIAL CONTENT

PREPRINT [9] – Validation of Hand Dryer Microbial Amplification Using Broad-Spectrum Growth Media: A Replication Study with Enhanced Detection Methodology

THE WANDERING PLUME OF FILTH: PHYSICAL EVIDENCE OF HAND DRYER ROOM IMPACT

PREPRINT [10] – The Wandering Plume of Filth: A Randomized, Empirical Assessment of Visible Wall Contamination Radiating from Commercial Hand Dryers Versus Paper Towel Dispensers in Functioning Public Restrooms

TEN PAPER SERIES HISTORICAL OVERVIEW, FINAL CONCLUSIONS, AND SUMMARY

PREPRINT [11] – Hand Dryer and Paper Towel Performance, Sanitation and Energy Use: Summary and Synthesis of a Ten-Paper Research Program

HAND DRYER STUDY

The Hand Dryer Studies, along with all supporting visual and text based content, are created and copyrighted by Ron Blouch Jr. All content is owned by the Ron Blouch Company and Hand Dryer LLC. All rights reserved. 2026

EMAIL: contact@handdryerstudy.com

Proposed and completed civil legal complaints for use against hand dryer manufacturers and their certifying agencies can be found at www.handdryerlegal.com

1.3 TB of supporting Chain of Custody Data for the journal preprints can be found at Backblaze and Cloudflare

The Full Documentary: FILTH AND DECEPTION: A STARBUCKS HAND DRYER STORY

The 6 Minute Summary: FILTH AND DECEPTION: A HAND DRYER SHORT STORY

The 1 Minute Intro: FILTH AND DECEPTION: A MINUTE OF HAND DRYERS

Whole Foods Alternate Version of the Full Documentary: FILTH AND DECEPTION: A WHOLE FOODS HAND DRYER STORY

Home Depot Alternate Version of the Full Documentary: FILTH AND DECEPTION: A WHOLE FOODS HAND DRYER STORY

Dryer Water Spray and Aerosolization Video

All Hand Dryer Dishes and Printed Hand Counted Dish Images