MATERIAL SAFETY DATA SHEET
GENERAL 
MANUFACTURER'S NAME 
Sta-Rite Industries, Inc.
EMERGENCY TELEPHONE NUMBERS 
1-800-424-9300 
ADDRESS 38655 Sky Canyon Drive 
Murrieta, CA 92563 
PRODUCT NAME/IDENTITY HARDNESS BUFFER SOLUTION DATE OF LAST REVISION 
01/31/00 
INGREDIENTS 
HAZARDOUS INGREDIENTS CAS # % TLV OSHA PEL 
Sodium hydroxide 1310-73-2 1.96 2 mg/m3 2 mg/m3 
PHYSICAL DATA 
BOILING POINT (
C) ~100° DENSITY (gm cc) ~1.0 
VAPOR PRESSURE (mmHg) <18 mm Hg A 20ºC % VOLATILE BY VOLUME (%) 98.04 
REACTION WITH WATER None EVAPORATION RATE (H2O = 
1) 
N/A 
SOLUBILITY IN WATER 100% MELTING POINT (
C) 0º 
APPEARANCE AND ODOR Clear solution -
Odorless 
pH 10-12 
OTHER COMMENTS VAPOR DENSITY (AIR=1) 
FIRE HAZARDSFLASH POINT (method 
used) 
N/A 
AUTOIGNITION TEMP 
(
C) 
N/A 
FLAMMABLE LIMITS IN AIR LEL N/A 
UEL N/A 
EXTINGUISHING MEDIA N/A 
SPECIAL FIRE FIGHTING PROCEDURES N/A 
UNUSUAL FIRE AND EXPLOSION HAZARDS NoneHEALTH HAZARDS 
TOXICITY DATA Oral rabbit LDLO for sodium hydroxide = 500 mg/kg. HMIS HAZARD RATING 
Health: N 
Flammability: N 
Reactivity: N 
ROUTE (S) OF ENTRY: INHALATION? SKIN? INGESTION? X 
EFFECTS OF OVEREXPOSURE (acute and chronic) 
INHALATION: A potential respiratory tract irritant. 
DERMAL/EYE CONTACT: A skin and eye irritant. Prolonged contact may cause burns. 
OTHER (Specify): May cause gastrointestinal irritation. 
MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE ND 
CARCINOGENICITY NTP? No IARC MONOGRAPHS? No OSHA REGU 
No 

FIRST AID 
EMERGENCY AND FIRST AID PROCEDURES: 
INGESTION: Drink large quantities of milk or water. Do not induce vomiting. Seek medical 
attention. 
INHALATION: Remove to fresh air. If breathing is difficult, give oxygen. 
SKIN CONTACT: Wash affected area with warm water and soap. Remove contaminated clothing. If 
irritation persists, seek medical attention. 
EYE CONTACT: Immediately flush eyes with water for at least 15 minutes. If irritation persi 
seek medical attention.
REACTIVITY 
STABILITY STABLE X CONDITIONS CONTRIBUTING TO INSTABILITY NoneUNSTABLE 
INCOMPATIBILITY (materials to avoid) Aluminum, acid solutions, organic halogens, o 
agents. 
HAZARDOUS DECOMPOSITION PRODUCTS - THERMAL AND OTHER (list) None 
HAZARDOUS 
POLYMERIZATIONMAY OCCUR CONDITIONS TO AVOID None 
WILL NOT OCCSPILLS/LEAKS 
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED 
Contain spill. Cover with non-combustible absorbent. Place in closable container for treatment 
spill. Flush area with water. 
WASTE DISPOSAL METHOD (Consult federal, state, or local authorities for proper disposal 
procedures.) 
Small amounts may be neutralized with dilute acid and flushed to drain with large quantities of 
EXPOSURE CONTROL 
RESPIRATORY PROTECTION (specify type). USE ONLY NIOSH-APPROVED EQUIPMENT. 
No protection needed under normal conditions.
VENTILATION (always 
maintain exposure 
below permissible 
limits) 
LOCAL EXHAUST Not normally SPECIAL None 
MECHANICAL (general) Usu 
adequate 
OTHER None 
PROTECTIVE GLOVES Required – Neoprene or Nitrile EYE PROTECTION Goggles 
OTHER PROTECTIVE EQUIPMENT/WORK PRACTICES 
Have eyewash available. Protect against splashes on skin or clothing. 
MISCELLANEOUS 
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING Store in a cool, dry area place. Keep conta 
closed. 

TRANSPORTATION REQUIREMENTS 
DOT CLASS: N/A (non-hazardous) 
UN NUMBER: N/A 
IMCO CLASS: N/A 
OTHER: N/A 
The above information is accurate to the best of our knowledge. However, since data, safety standards, and governm 
regulations are subject to change and the conditions of handling and use, or misuse are beyond 
control, WE MAKE NO WARRANTY, EITHER EXPRESSED OR IMPLIED, WITH RESPECT TO THE COMPLETENESS 
CONTINUING ACCURACY OF THE INFORMATION CONTAINED HEREIN AND DISCLAIMS ALL LIABILITY FOR RELIA 
THEREON: User should satisfy himself that he has all current data relevant to his particular use. 
ND = NO DATA FOUND NA = NOT APPLICABLE NE = NOT ESTABLISHED