PURE Bioscience Completes Successful Field Test of PURE Hard Surface Disinfectant With Leading Quick Service Restaurant Chain

PURE Bioscience Completes Successful Field Test of PURE Hard Surface 
Disinfectant With Leading Quick Service Restaurant Chain 
PURE Hard Surface Reduced Overall Contamination 96% Better Than
Current 'Quat' Ammonia Sanitizer, Supporting Laboratory Studies of
Greater Than 99.999% Reduction in Microbial Counts 
SAN DIEGO, CA -- (Marketwired) -- 06/27/13 --  PURE Bioscience, Inc.
(OTCQB: PURE), the creator of the patented silver dihydrogen citrate
(SDC) antimicrobial, successfully completed in-store field testing of
its PURE(R) Hard Surface disinfectant/sanitizer by a leading
worldwide quick service restaurant chain. 
Testing was conducted twice daily over five days in six different
restaurants and yielded approximately 1,000 data points comparing the
efficacy of the chain's current, quaternary ammonia-based sanitizer
with that of PURE Hard Surface disinfectant/sanitizer. Areas tested
included food preparation tables, produce slicing equipment, food
preparation counters, customer transaction counters, dining tables,
soda machines and ice dispensers. 
PURE Hard Surface disinfectant/sanitizer achieved a 96% better
reduction in overall contamination than the restaurant's quaternary
ammonia sanitizer (with standard deviation of 4%). For non-beverage
dispenser use sites, PURE Hard Surface's overall contamination
reduction was 96% (+/- 3%) more effective. For beverage dispensers,
it was 96% (+/- 6%) more effective with external nozzles and 98% (+/-
1%) more effective with internal nozzles. The testing also measured
an overall contamination reduction from the interior of the ice
chutes with PURE as 94% (+/- 4%) more effective than quaternary
ammonia sanitizer. 
Data collection methods included adenosine triphosphate (ATP) assay,
which provided a direct measurement of the biological contamination
on the tested surface, as well as sampling for aerobic plate count
(APC), yeast and mold. 
The results demonstrated in this field test are supported by numerous
third-party laboratory studies and validated by the U.S.
Environmental Protection Agency (EPA) registration in which PURE Hard
Surface disinfectant demonstrated greater than 99.999% reduction in
microbial counts. The full results of the study can be viewed on the
company's website here. 
"As in all food ser
vice related markets, the quick service restaurant
industry faces critical challenges regarding infectious disease
control," said Michael L. Krall, PURE Bioscience's president and CEO.
"The opportunity provided by this forward-thinking restaurant chain
allowed us to compare our powerful yet low-toxic product head-to-head
against the incumbent chemical sanitizer. This 'real world' field
test confirmed that the introduction of PURE Hard Surface
disinfectant and sanitizer into existing cleaning protocols can
significantly mitigate the threat of contamination and improve
overall food safety." 
In addition to quantitative results, the company recorded feedback
from employees who participated in the field test. Employees
consistently complained of rashes, dry skin, breathing irritation and
general dissatisfaction in association with using the quaternary
ammonia product and appreciated the opportunity to evaluate an
alternative. After using PURE Hard Surface, employees expressed
preferences for the test product based on ease of use, benign effect
on hands, improved appearance of stainless steel, lack of unpleasant
odor, and elimination of unsightly buckets and rags. The employees'
aversion to the current product and positive response to using the
test product suggests that the benefits of the non-caustic and
odorless formula of PURE Hard Surface disinfectant/sanitizer may lead
to better compliance and increased frequency of use. 
"In essence," concluded Krall, "we've been able to demonstrate the
powerful capabilities of our PURE Hard Surface in a real-world
setting. We expect the greater public awareness of this data to
accelerate the adoption of PURE Hard Surface in the food service and
food processing markets as an effective and responsible disinfectant
and sanitizer." 
PURE Hard Surface: Truly Responsible
 A comparison of the EPA
registered label and MSDS (Material Safety Data Sheet) for each
product reveals notable differences in both the safety and the
efficacy of the two products tested. The Hazardous Material
Information System (HMIS) rating for PURE Hard Surface lists health
hazard, flammability and reactivity ratings of zero, zero and zero,
while the corresponding HMIS ratings for the quaternary ammonia
product are three, two and zero. Also, as an EPA Category IV product,
PURE Hard Surface is not required to provide first aid instructions
or health hazard statements on its label. However, the quaternary
ammonia concentrate is required to clearly state "DANGER" and carry
mandated precautionary statements regarding the hazards to humans and
animal health as well as extensive first aid instructions.  
PURE Hard Surface: Highly Effective
 In addition to the substantial
difference in safety, the two products compared in this field-test
have markedly different efficacy. Until now the food industry has
been limited to products that only perform as "Sanitizers" (defined
by the U.S. EPA as a product that reduces but does not eliminate
microorganisms from a surface). As a "Disinfectant" (defined by the
U.S. EPA as a product that destroys or irreversibly inactivates
pathogens), PURE Hard Surface provides greater control of
microorganisms and is approved for use on food contact surfaces. PURE
Hard Surface provides complete disinfection efficacy with no rinse
required in as few as 30 seconds up to two minutes, compared with the
mere pathogen reduction offered by the quaternary ammonia sanitizer.
Further, only PURE Hard Surface protects against the highly
pathogenic and often food-borne Norovirus as well as CRE pathogens,
the emerging class of drug resistant organisms. Perhaps most
importantly, PURE Hard Surface is the only EPA registered Category IV
disinfectant that provides residual protection for 24 hours.  
About PURE Hard Surface
 U.S. EPA-registered PURE Hard Surface
disinfectant and food contact surface sanitizer provides an
unparalleled combination of high efficacy and low toxicity with
30-second bacterial and viral kill times and 24-hour residual
protection. SDC-based PURE Hard Surface completely kills resistant
pathogens like MRSA and Carbapenem-resistant Klebsiella pneumoniae
(NDM-1) and also effectively eliminates dangerous fungi and viruses
including HIV, Hepatitis B, Hepatitis C, Norovirus, Influenza A,
Avian Influenza, H1N1 and Human Coronavirus as well as hazardous food
pathogens such as E. coli, Salmonella and Campylobacter. PURE Hard
Surface delivers powerful broad-spectrum efficacy while remaining
classified as least-toxic (Category IV) by the U.S. EPA, and its
active ingredient, SDC, has been determined Generally Recognized as
Safe (GRAS) for use as a biocide on food processing equipment,
machinery and utensils. 
About PURE Bioscience, Inc.
 PURE Bioscience, Inc. develops and
markets technology-based bioscience products that provide solutions
to numerous global health challenges, including Staph (MRSA) and
Carbapenem-resistant Enterobacteriaceae (CRE)/NDM-1+. PURE's
proprietary high efficacy/low toxicity bioscience technologies,
including its silver dihydrogen citrate-based antimicrobials,
represent innovative advances in diverse markets and lead today's
global trend toward industry and consumer use of "green" products
while providing competitive advantages in efficacy
 and safety.
Patented SDC is an electrolytically generated source of stabilized
ionic silver, which formulates well with other compounds. As a
platform technology, SDC is distinguished from competitors in the
marketplace because of its superior efficacy, reduced toxicity and
the inability of bacteria to form a resistance to it. PURE is
headquartered in El Cajon, California (San Diego metropolitan area).
Additional information on PURE is available at www.purebio.com. 
Forward-looking Statements
 This press release includes statements
that may constitute "forward-looking" statements, usually containing
the words "believe," "estimate," "expect," "intend," "project" or
similar expressions. These statements are made pursuant to the safe
harbor provisions of the Private Securities Litigation Reform Act of
1995. Forward-looking statements inherently involve risks and
uncertainties that could cause actual results to differ materially
from the forward-looking statements. Factors that would cause or
contribute to such differences include, but are not limited to, the
Company's cash position and liquidity requirements, the Company's
failure to implement or otherwise achieve the benefits of its
proposed initiatives and business plans, acceptance of the Company's
current and future products and services in the marketplace, the
ability of the Company to develop effective new products and receive
regulatory approvals of such products, competitive factors,
dependence upon third-party vendors, and other risks detailed in the
Company's periodic report filings with the Securities and Exchange
Commission. By making these forward-looking statements, the Company
undertakes no obligation to update these statements for revisions or
changes after the date of this release. 
Investor Relations Contact:
Ron Both
Liolios Group, Inc.
Tel 949-574-3860
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