Dissolved Oxygen

Dissolved oxygen can be measured as the concentration of oxygen present in the water (mg/L or ppm oxygen), or as the percent of oxygen actually in the water as compared to the maximum amount the water can hold. This is referred to as percent (%) saturation. The level at which water is saturated is dependent upon several factors, but two of the most important are temperature and salinity. As the temperature of the water decreases, its ability to hold oxygen increases. Likewise, as salinity levels decrease the saturation level increases. Dissolved oxygen levels are vital in many areas, but they are of particular concern to aquaculturists and environmental analysts who must constantly monitor levels in the water. The dissolved oxygen test is also important to operators of waste water facilities, both at the operation site and in the lab. Dissolved oxygen levels are monitored at the wiers, and before the water leaves the plant after being dechlorinated. In the laboratory the dissolved oxygen test is
used to analyze the BOD of the water.


	Portable hand-held dissolved oxygen meter


	Portable hand-held dissolved oxygen meter designed to provide measurements for the most critical water quality parameter. Digital readout provides mg/L, % saturation, and temperature readings by selecting a mode. Features automatic temperature compensation (ATC) for mg/L and % saturation; salinity compensation is manual by direct dial. Meter comes packaged in a convenient carrying case with 2 replacement membrane cartridges, electrolyte, and protective probe storage bottle.

ITEM Description	LC ORDER №	PRICE
#D0-4000 with 10 feet cable	LCL1903	$760.00	QTY:
#D0-4000 with 50 feet cable	LCL1905	$903.00	QTY:
REPLACEMENT PARTS AND OPTIONAL ITEMS AVAILABLE
3-pk. Membrane Replacement package with KCI Solution	LCL1914	$100.50	QTY:
4 Membrane (no solution)	#LCL1907	141.75	QTY:
DO Filling Solution 30 ml	#LCL2787-G	$ 7.00	QTY:
Replacement Probe with 10 feet cable	#LCL1913	$323.00	QTY:
Replacement Probe with 50 feet cable	#LCL1915	$395.00	QTY:
Optional AC Adapter 120/60Hz	#LCL1744	$ 26.00	QTY:

Oxygen Measurement:
Range:	0–19.99 mg/L; 0–200% Sat.
Resolution:	0.01 mg/L; 1% Sat.
Compensation:	Automatic temperature compensation (ATC) for mg/L and % saturation. Manual setting for salinity 0-30 ppt in 5 ppt increments.
Probe:	Polarographic type, Delrin^® body, 2 mil Teflon^® membrane, 3m (10 ft) or 15m (50 ft) cable with connector.
Readout:	3-1/2 digit LCD
Controls:	O₂ , % Sat, °C, Off, Salinity Comp, Slope
Response Time:	90% in 10 seconds at a constant temperature of 21°C. Response at low dissolved oxygen levels typically 90% in 30 seconds.
Power:	Alkaline 9V DC battery, 3.5 mm jack for optional AC adapter.
Size (LxWxH):	Meter: 5-1/4 x 3-1/4 x 2-1/2" Probe: 1/2 x 4-3/16"
Weight:	3/4 lbs.


Range:	0°C to 120°C
Resolution:	0.1°C

Click Here To Download the #Disolved Oxygen Meter Operating Manual

FILE SIZE: 160 kb
Adobe Acrobat Reader or equal Required


	Dissolved Oxygen TRACER PockeTester

Oxygen level displayed as % Saturation from 0 to 200.0% or
Concentration from 0 to 20.00 ppm (mg/L)
Adjustable Altitude Compensation (0-20,000 ft in 1,000 ft increments)
Adjustable Salinity Compensation from 0 to 50 ppt
Memory stores up to 25 data sets with DO and Temperature reading
Self-calibration on power up; Data Hold, Auto power off, Low battery indicator
Optional 3 ft (1m) or 16 ft (5m) extension cable

	Range	Resolution	Accuracy
DO (sat. mode)	0 to 200.0%	0.1%	±2% FS
DO (conc. mode)	0 to 20.00 ppm (mg/L)	0.01 ppm (mg/L)	0.4 ppm (mg/L)
Tempurature	32 to 122°F (0 to 50°C)	0.1°F/°C	±1.8°F (1°C)
Dimensions	1.4x6.9x1.6 (36x176x41mm)


	Complete with DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 1.5V SR44W batteries, and 48" (1.2m) neckstrap

Item Description	Shipping Code	LC Order №	Price Each
Dissolved Oxygen Tracer Complete with DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 1.5V SR44W batteries, and 48" (1.2m) neckstrap	NH (1)	1761	284.00	QTY:
REPLACEMENT PARTS AND OPTIONAL ITEMS AVAILABLE
DO Replacement Sensor Module Kit	NH (1)	1762	156.45	QTY:
DO Membrane Kit (6 screw-on membranes and solution)	NH (1)	1761M	66.60	QTY:
Weighted Stand w/Sample Cups (5)	NH (1)	1746	16.00	QTY:
Sample Cups w/caps (24)	NH (1)	1745	17.50	QTY:
DO Extension Cable (1 meter)	NH (1)	1763	29.00	QTY:
DO Extension Cable (5 meters)	NH (1)	1764	49.00	QTY:

Click Here To Download the #Disolved Oxygen TRACER Meter Operating Manual

FILE SIZE: 133 kb
Adobe Acrobat Reader or equal Required


	Water Sample Collector

A one-liter sampler of clear acrylic furnished with a 20 meter calibrated line and a lead collar which assures rapid descent and minimal drift. A brass messenger triggers a release mechanism to seal the sample chamber with two fitted rubber plungers at the desired sampling depth. The built-in side outlet and flexible tube allows for removal of the water sample.

Item Description

LC №

Price Each

JT-1 Water Sampler

1077

193.00

The Water Sampler is designed to take a 1.0 liter sample. It is
attached to a calibrated line which is used to measure the depth at which
samples are obtained. A horizontal triggering device is activated by a brass
messenger which is sent down the line to trip the closing mechanism and
release the two fitted plungers. These plungers provide a positive seal and
prevent the sample from mixing with intermediate layers of water as the
sample is brought to the surface. A lead collar has been added to the water
sampler to insure rapid descent and to minimize drifting due to current
movements. The materials which were chosen to make the sampler were
selected for their ability to prevent any contamination of the sampled
water. Attached to the sampling chamber is a special drain outlet for
removing sample aliquots. All components of the LaMotte Water Sampler
are made with non-corrosive materials.

Click Here To Download the Water Sample Collector Operating Manual

FILE SIZE: 57 kb
Adobe Acrobat Reader or equal Required


	Dissolved Oxygen/Temperature Sampler


	Collects samples at specific depths. Ideal for the collection of dissolved oxygen samples. When trip line is pulled, dissolved oxygen sample bottle will fill, overflow and flush more than three times to insure a representative sample. During retrieval, decreasing water pressure prevents exchange of air and water with sample. Excess water in sample chamber can be used for additional tests such as pH. Interior chamber accommodates our armored thermometer (not included) for accurate sample temperature readings. Accommodates the same sample bottle used in our popular DO kits. Use with braided line and weight.

		(Line and Weight not included.)

Item Description

LC Order №

Price Each

Dissolved Oxygen/Temperature Sampler

3-0026

148.00

Weight and Calibrated Line

1064-G

37.00


	The heavy nylon Calibrated Line is marked from 0–20 meters and has a spring clip for easy attachment to a Secchi Disk, plankton net or a lead weight. A 2 lb. (0.9Kg) lead weight is provided. The nylon line wraps conveniently around an ethafoam block which also acts as a float to prevent accidental loss.


	Armored Thermometers


	A precision, NON-MERCURY thermometer, furnished in a protective plastic jacket with a window opening. Engraved graduations on white tubing increase the readability over the full range of -5° to 45°C in 0.5° increments.

Item Description

LC Order №

Price Each

Armored Thermometer

1066

19.95




	"Min-Max" Memory Thermometer

Range: 14 - 392°F or 10 - 200°C
°F or °C selectable scale
Recalls minimum and maximum temperature

Item Description

LC Order №

Price

Min-Max Memory Thermometer

5-0095

37.00


	Biochemical Oxygen Demand (BOD)

Biochemical Oxygen Demand (BOD): This is a determination of the amount of organic material in wastewater by measuring and comparing the dissolved oxygen content before and after incubating the sample for 5 days at 20°C. All reagents, including seed capsules and glassware needed to perform this test are included in the kit. Incubator and DO meter are not included.

LC Order №

Test System

Range/Sensitivity

# of Tests
(# Reagents)

Shipping Code (Weight/lbs)

Price Each

7420

BOD Buret Titration

1 mL = 0.2 mg O₂ 0-1000 mg/L

100 (10)

HA (12)

$683.00

QUANTITY	CONTENTS
2 x 60 mL	*Manganous Sulfate Solution
2 x 60 mL	*Alkaline Potassium Iodide Azide Reagent
2 x 60 mL	*Sulfuric Acid, Conc.
2 x 500 mL	*Sodium Thiosulfate Solution, 0.025N
100 mL	Starch Indicator Solution
250 mL	Phosphate Buffer, pH 7.2
250 mL	Magnesium Sulfate, 1.10%
250 mL	Ferric Chloride, 0.015%
250 mL	Calcium Chloride, 2.75%
50	Polyseed BOD Seed Capsules
1	Automatic Buret, 10 mL, glass, Teflon stopcock
4	Pipets, Transfer, 1 mL, glass
1	Flask, Erlenmeyer, 500 mL
6	BOD Bottles, 300 mL
1	Graduated Cylinder, 100 mL, glass
1	Pipet, 2 mL, glass
1	Pipet, 10 mL, glass
1	Pipet, 25 mL, glass
1	Pipet, 100 mL, glass
1	Buret Stand, single
1	Pipet Filler Bulb


	WARNING: Reagents marked with an are considered to be potential health hazards.


	WASTEWATER PRETREATMENT NOTE: Pretreatment reagents are not supplied with this kit. The pH of the sample should be in the range of 6.5 to 7.5. Adjust samples with either 1N Sodium Hydroxide or 1N Sulfuric Acid to bring within this range. Samples with free chlorine should be treated with 0.025N Sodium Sulfite solution.

Oxygen, Dissolved (Individual Test Kits)

Oxygen, Dissolved: The azide modification of the Winkler method is a modified iodometric titration whereby oxygen, in the presence of a strong alkali, oxidizes manganese, which in turn reacts with iodide to form iodine. This is titrated with a standard thiosulfate solution in the presence of a starch indicator to enhance the endpoint. Azide eliminates nitrite interference.


	EPA ACCEPTED PROCEDURE To qualify as an EPA accepted test, and to achieve the greatest accuracy, the Sodium Thiosulfate Solution, 0.025N (4169) must be standardized daily*.




	NPDES EPA Accepted

LC Order №

Test System

Range/Sensitivity

# of Tests
(# Reagents)

Shipping Code (Weight/lbs)

Each

7414 EDO

Direct Reading Titrator

0-10 ppm/0.2 ppm O2

50 at 10 ppm (5)

HA (2)

$ 45.95

CONTENTS	Description	CODE
30 mL	*Manganous Sulfate Solution	*4167-G
30 mL	*Alkaline Potassium Iodide Azide	*7166-G
50 g	*Sulfamic Acid Powder (7414 Kit)	*6286-H
30 mL	*Sulfuric Acid, 1:1 (5860 Kit)	*6141WT-G
60 mL	*Sodium Thiosulfate, 0.025N	*4169-H
30 mL	Starch Indicator Solution	4170WT-G
1	Spoon, 1.0 g, plastic (7414 Kit)	0697
1	Direct Reading Titrator	0377
1	Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap	0608
1	Water Sampling Bottle, 60 mL, glass	0688-DO






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