"water+bath"

The Universal Specific Gravity Kit is designed to be used with any electronic scale with a minimum capacity of 15 grams and a tare (re-zeroing) function to easily measure the specific gravity of gemstones and minerals.
Just weigh the stone "in air" on the integrated weighing platform of the scale, then without changing the setup, weigh the stone in water by placing it in the underwater weighing pan of the gem holder suspended above the platform. Plug the two values into the specific gravity equation and obtain the specific gravity of your stone.

Includes: lightweight gem holder support and underwater weighing pan, independent, spill-resistant, adjustable beaker support, beaker for filling with water - 100ml capacity, aluminum test weight, stainless steel tweezers, instructions, reproducible Specific Gravity worksheet, table of 300 common minerals/gems sorted by SG, with 6 other properties, including refractive index.

Note: shown with Boreal Balance - not included.

CHEMets® Hydrogen Peroxide Visual Test Kit 0 to 0.5 ppm

Range: 0 to 1.55% as NaOClMDL: 0.3%. Method: DPD (hypochlorite).

CHEMets® Iron In Brine Visual Test Kit

CAS Number: 58-08-2
Formula Weight: 194.20
Formula: C₈H₁₀N₄O₂
Hazard Info: Toxic
Density (g/mL): 1.23
Boiling Point (°C): 178
Freezing Point (°C): 238
Solubility: Chloroform, Water and Alcohol
Synonyms: 1,3,7-Trimethylxanthine
Shelf Life (months): 12
Storage: Blue

CAS Number: 1344-28-1
Formula Weight: 101.96
Formula: Al₂O₃
Hazard Info: Irritant, Nuisance
Density (g/mL): 3.5
Boiling Point (°C): 2980
Freezing Point (°C): 2050
Solubility: Insoluble in Water, Low solubility in Acids
Synonyms: Alumina, Aluminum Trioxide
Shelf Life (months): 36
Storage: Green

CAS Number: 573-58-0
Formula Weight: 696.68
Formula: C₃₂H₂₂N₆Na₂O₆S₂
Hazard Info: Toxic
Solubility: Water and Alcohol
Synonyms: Direct Red 28, C.I. No. 22120, Congo Red Stain, Congo Red Biostain
Shelf Life (months): 36
Storage: Green

Refill of Nitrate Testabs used in LaMotte kits.

CAS Number: 7782-63-0
Formula Weight: 278.02
Formula: FeSO4·7H2O
Hazard Info: Toxic
Density (g/mL): 1.897
Boiling Point (°C): Decomposes
Freezing Point (°C): 72
Solubility: Water
Synonyms: Ferrous Sulfate 7-Hydrate, Iron(II) Sulfate 7-Hydrate, Ferrous Sulfate Heptahydrate
Shelf Life (months): 12
Storage: Green

CAS Number: 7784-26-1
Formula Weight: 453.33
Formula: AlNH₄(SO₄)₂·12H₂O
Hazard Info: Toxic
Density (g/mL): 1.645
Freezing Point (°C): 94.5
Solubility: Water and Glycerol
Synonyms: Ammonium Alum, Aluminum Ammonium Sulfate Dodecahydrate
Shelf Life (months): 36
Storage: Green

The Hydroponics 4-Way Test Kit offers tests for pH and three key nutrient factors: nitrogen, phosphorus and potassium.

CAS Number: 13477-34-4
Formula Weight: 236.15
Formula: Ca(NO₃)₂·4H2O
Hazard Info: Flammable, Oxidizer, Explosive
Density (g/mL): 2.36
Boiling Point (°C): Decomposes
Freezing Point (°C): 45
Solubility: Water, Alcohol and Acetone
Synonyms: Calcium Nitrate Tetrahydrate, Nitric Acid Calcium(II) Salt
Shelf Life (months): 12
Storage: Yellow

CAS Number: 1305-62-0
Formula Weight: 74.10
Formula: Ca(OH)₂
Hazard Info: Irritant, Corrosive
Density (g/mL): 2.24
Boiling Point (°C): as CaO 579
Freezing Point (°C): as CaO 2580
Solubility: Water, Glycerol, and Acids
Synonyms: Hydrated Lime, Slacked Lime, Caustic Lime, Calcium Hydrate
Shelf Life (months): 12
Storage: Green

CAS Number: 13478-00-7
Formula Weight: 290.81
Formula: Ni(NO3)2·6H2O
Hazard Info: Suspected Human Carcinogen, Toxic
Density (g/mL): 2.065
Boiling Point (°C): 138
Freezing Point (°C): 57
Solubility: Water, Alcohol, and Ammonium Hydroxide
Synonyms: Nickel Nitrate Hexahydrate, Nickelous Nitrate 6-Hydrate
Shelf Life (months): 12
Storage: Yellow

Specially Prepared “Real-Life” Combinations
The world is teeming with a wide variety of microlife, making studying samples of pond water complicated especially for the beginning student. To lessen the confusion, WARD’S has prepared different culture mixes that reflect protist combinations that occur in the real world, yet eliminates the hundreds of other life-forms found in a collected sample. Comes with a dichotomous key and either the Working with Algae or the Working with Protozoa manual. Supplied in a single jar.

Contents: Amphidinium, Cyclotella and Thalassiosira.

Specially Prepared “Real-Life” Combinations
The world is teeming with a wide variety of microlife, making studying samples of pond water complicated especially for the beginning student. To lessen the confusion, WARD’S has prepared different culture mixes that reflect protist combinations that occur in the real world, yet eliminates the hundreds of other life-forms found in a collected sample. Comes with a dichotomous key and either the Working with Algae or the Working with Protozoa manual. Supplied in a single jar.

Contents: Ocean scum.