Hach Micro Dist User Manual

23
Section 7 General Procedure
7.1 General Procedure
DANGER
Chemical hazard. To avoid potential exposure to toxic gas, the
manufacturer recommends operating the Micro Dist under a
fume hood.
DANGER
Danger chimique. Pour éviter le contact potentiel avec des gaz
toxiques, le fabricant recommande d'utiliser le Micro Dist sous
une hotte aspirante.
CAUTION
Chemical hazard. Always follow appropriate laboratory safety
procedures when handling chemicals. Review all material
safety data sheets (MSDS) for safety information specific to
chemicals used in Micro Dist procedures.
ATTENTION
Danger chimique. Suivez toujours les procédures de
laboratoire de sécurité lors de l'utilisation de produits
chimiques. Veuillez revoir toutes les feuilles de données de
sécurité sur les matériaux concernant les informations en
matière de sécurité spécifiques aux produits chimiques
utilisés dans les procédures Micro Dist.
Though the Micro Dist methods normally release no hazardous
gases, there exists the potential for a hazardous situation to occur.
Table 2 describes the occupational threshold limits for gases that
may potentially be released from the Micro Dist in a fault condition.
Important Note: Use this procedure as a template for all
Micro Dist™ Methods. The specific methods refer to figures in this
section.
Table 2 Hazardous gas information for specific methods
Method name Gas Manual section
Occupational
Threshold Limit
1,2,3
Concentration
(per m
3
)
Cyanide-1 Cyanide (HCN) 8.1 on page 31 10 ppm per 8 hours 11 mg
Cyanide-2 Cyanide (HCN) 9.1 on page 37 10 ppm per 8 hours 11 mg
Cyanide-3 (WAD) Cyanide (HCN) 10.1 on page 39 10 ppm per 8 hours 11 mg
Cyanide-5 Cyanide (HCN) 11.1 on page 43 10 ppm per 8 hours 11 mg
Phenolics-1 Phenol (C
6
H
5
OH) 12.1 on page 45 5 ppm per 8 hours 19 mg
Sulfide-1 Hydrogen Sulfide (H
2
S) 13.1 on page 47 20 ppm 15 mg
Sulfide-2 Hydrogen Sulfide (H
2
S) 14.1 on page 51 20 ppm 15 mg
Ammonia-1 Ammonia (NH
3
) 15.1 on page 55 50 ppm per 8 hours 35 mg
Ammonia-2 Ammonia (NH
3
) 16.1 on page 59 50 ppm per 8 hours 35 mg
Tritium-1 Tritium (
3
H) 17.1 on page 61 5000 mrem per year N/A
1
http://www.cdc.gov/niosh/pdfs/0337.pdf (H
2
S)
2
http://www.cdc.gov/NIOSH/pdfs/0333.pdf (HCN)
3
http://www.cdc.gov/niosh/pdfs/74-136a.pdf (Ammonia)

Hach Micro Dist Specifications

General

Brand	Hach
Model	Micro Dist
Category	Measuring Instruments
Language	English