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Fine, 2.5 kg (5.5 lbs.)

Item Number:  (470057-822)
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Turbidity Refill Kit

Item Number:  (470002-188)
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Medium, 2.5 kg (5.5 lbs.)

Item Number:  (470003-364)
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LaMotte® Water Test Kit, Phosphate, Low Range

Item Number:  (470203-078)
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NITRATE NITROGEN TAB KIT 0-15 PPM CN

Item Number:  (470335-412)
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Alkalinity Refill

Item Number:  (470112-686)
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Pebbles (stones), 1 - 2 cm, 1 lbs. (Approximately 1 cup)

Item Number:  (470092-704)
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LaMotte® Water Test Kit, Turbidity

Item Number:  (470203-128)
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Pebbles (gravel) 2.5 kg

Item Number:  (470012-936)
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Iron Refill Kit

Item Number:  (470021-190)
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Dissolved Oxygen Water Test Kit

Item Number:  (470203-112)
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Alkalinity Water Test Kit

Item Number:  (470203-106)
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Coarse, 2.5 kg (5.5 lbs.)

Item Number:  (470057-824)
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Pebbles (gravel) , 5 - 10 mm, dark, 1 kg

Item Number:  (470092-766)
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Stream Table Manual

Item Number:  (470002-360)
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Making Dew Kit

Item Number:  (470225-386)
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Making Dew Kit, Classroom Pack, Includes: 15 metal cans, 15 metal backed thermometers and a Teacher's Guide for 15 pairs of students. This is to understand how dew and frost are formed and to understand the concepts of condensation, dew point, evaporation, humidity and sublimation

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Showing items   65 - 80  of 271