Conventional Inorganic Analyses

Category - Aqueous	Methods	Minimum Qty.	Recommended Containers	Required Preservation	Holding Time
Alkalinity	310.1-2	100 mL	Plastic or Glass Bottle	Cool to 4° C	14 Days
Bromide	300.0	100 mL	Plastic or Glass Bottle	None	28 Days
Chloride	300.0	50 mL	Plastic or Glass Bottle	None	28 Days
Chlorine, Total Residual	300.0	200 mL	Plastic or Glass Bottle	None	Analyze Immediately
Cyanides	335.1-3	500 mL	Plastic or Glass Bottle	Remove Sulfied NaOH to pH >12, Cool to 4° C	14 Days
Fluoride	300.0	100 mL	Plastic or Glass Bottle	None	28 Days
Ammonia	350.1-3	400 mL	Plastic or Glass Bottle	Sulfuric Acid to pH <2	28 Days
Total Kjeldahl Nitrogen	351.1-4	500 mL	Plastic or Glass Bottle	Sulfuric Acid to pH <2, Cool to 4° C	28 Days
Nitrate	300.0	100 mL	Plastic or Glass Bottle	Cool to 4° C	48 Hours
Nitrite	300.0	50 mL	Plastic or Glass Bottle	Cool to 4° C	48 Hours
Orthophosphate	365.1-3	50 mL	Glass Bottle Only	Filter (0.45 um), Cool to 4° C	48 Hours
Oxygen, Dissolved	360.1	300 mL	Glass Bottle Only	None	Analyze Immediately
Phosphorus, Total	365.1-4	50 mL	Glass Bottle Only	Sulfuric Acid to pH <2, Cool to 4° C	28 Days
Silica	370.1	50 mL	Plastic Bottle Only	Cool to 4° C	28 Days
Sulfate	300.0	50 mL	Plastic or Glass Bottle	Cool to 4° C	28 Days
Sulfide	376.1-2	500 mL	Plastic or Glass Bottle, 2 mL Zinc Acetate, Cool to 4° C	NaOH to pH >12	7 Days
Sulfite	377.1	50 mL	Plastic or Glass Bottle	None	Analyze Immediately

The lab is open 8:00 AM to 4:30 PM, Monday through Friday

Samples are only accepted according to the following schedule:

Monday through Thursday, 8:00 AM to 4:00 PM; Friday, 8:00 AM to 12:00 PM *Hours will vary to accommodate government holidays.

If you are submitting pool samples:

Pool samples are only accepted between the hours of 8:00 AM and 3:00 PM.
Pseudomonas expedited turnaround time (rush order) is limited to 4-day and 5-day only.