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Thermo Fisher Scientifi c
Operation Manual HM550
Cryostat disinfection, Option DC + Sanosil
®
Cold disinfection in the cryostat Microm HM550
page 3 of 3
Reduction factors were determined in comparison to control experiments without treatment with
disinfectant. Control experiments on the efficacy of neutralization and the toxicity of the
neutralizing solution were also carried out.
3. Results
The following table summarizes the test results. Details are given in a separate test report [4].
Test strain
Mean cell number
Reduction factors
2
Control
1
Treatment
1
log
10
%
Staphylococcus aureus
9.0 x 10
6
452
4.3
99.99
Pseudomonas aeruginosa
5.7 x 10
6
≤ 33
≥ 5.2
≥ 99.999
Enterococcus hirae
1.23 x 10
6
6.570
2.3
99.5
Candida albicans
2.23 x 10
6
474
3.7
99.98
1
mean values from three or six replicates, respectively
2
average values
4. References
[1] Gebel J, Werner H-P, Kirsch-Altena A, Bansemir K. Standardmethoden der DGHM zur
Prüfung chemischer Desinfektionsverfahren. 14 Flächendesinfektion - praxisnaher Versuch. 14.1
Überprüfung der bakteriziden und fungiziden Wirkung auf nicht porösen Oberflächen, mhp
Verlag, Wiesbaden, Germany, 2001.
[2] DIN EN 13697:2002-01. Chemical disinfectants and antiseptics - Quantitative non-porous
surface test for the evaluation of bactericidal and/or fungicidal activity of chemical disinfectants
used in food, industrial, domestic and institutional areas - Test method and requirements without
mechanical action (phase 2/step 2).
[3] Monteiro DR, Gorup LF, Takayama AS, Ruvollo-Filho AC, de Camargo ER, Barbosa DB
2009. The growing importance of materials that prevent microbial adhesion: antimicrobial effect
of medical devices containing silver. Int. J. Antimicrob. Agents 34(2), 103-110.
[4] Maier I 2010. Kaltdesinfektion im Kryostaten Microm HM550. Prüfung der bakteriziden und
fungiziden Wirkung Teil 1 (20.12.2010).
eco
scope
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