Supplies

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

Our Magnetic Stir Bars are constructed of high quality magnets coated with PTFE. Along with individual sizes of polygon, octagon, and egg-shaped, two convenient assortments are available. Stir Bar retrievers also available. (1 per EA)

Tubing Clamp One Position, PP 0.25- 0.5" (100 per CS)

Orthophenanthroline TS - 100mL (1 per EA )

Natural Rubber Rubber Policeman for stirring rods (12 per PK )

Methylthymol Blue Sodium Salt, Reagent, ACS (1 per EA )

Cupric Acetate, Monohydrate, Crystal, Reagent, ACS or copper (II) acetate is used as a catalyst or oxidizing reagent for the synthesis of various inorganic and organic compounds. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use. Spectrum Chemical manufactured Reagent ACS grade products meet the toughest regulatory standards for quality and purity.

(1 per EA)

Silver Nitrate, 0.1N, Standardized Solution is an inorganic aqueous solution. It is used to titrimetrically determine purity of products containing halides by the direct titration with standardized silver nitrate solution.

(4 per CS )

Mol. Wt:84 Common Name: Formula: CHNaO3 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 144-55-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)

Dimethyl Methylphosphonate, also known as methylphosphonic acid dimethyl ester, is an organophosphorus compound used as a flame retardant and a preignition additive for plasticizer, gasoline, and anti-foaming agents. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.

(1 per EA )

Sulfuric Acid Concentrated, 16 oz (GL) (1 per EA )

Sodium Nitroferricyanide, Dihydrate, Crystal, Reagent, ACS (1 per EA )

sliding drawer freezer racks, aluminum, colored labels, pull-out handles, dimension: 564mm*141mm*285mm, capacity: 4*5,1 piece/case (1 per EA )

Designed for repeated laboratory use, United Scientific™ CrystalClear™ crystallizing dishes are made from industrial grade borosilicate 3.3 glass. Dishes are autoclavable, with excellent chemical resistance, a low temperature gradient, and can withstand high temperatures and thermal shocks. (3 per PK )

Good quality glazed porcelain. Acid and alkali resistant. Sold as eaches. (1 per EA)

Shelf Life (months): 24, Traceable to NIST, UN Number: (1 per EA)

Mixing bowls are constructed from 304 stainless steel for increased heat resistance. Bowls feature rounded corners, and polished mirror surface for easy mixing and cleaning. Can withstand temperatures up to 800°C (1472°F). Meets NSF standards. (1 per EA)

Shelf Life (months): 24, Traceable to NIST, UN Number: (1 per EA)

Replacement 300ml base designed for use with Vacuum Filter Holder Set with Fritted Glass Support Base (FHFT47). (1 per EA)

Replacement 300ml PTFE-coated glass base designed for use with Vacuum Filter Holder Set with PTFE Coated Funnel and Base (FHPT47). (1 per EA)

Melatonin, Powder known chemically as N-acetyl-5-methoxytryptamine is a naturally occurring hormone that is found in many animals, plants and microbes. Melatonin is categorized by the FDA as a dietary supplement and is not regulated as a pharmaceutical drug. There have been several studies done on melatonin as a potential treatment of gastro-esophageal reflux disease, cancer, immune disorders, cardiovascular disease, depression, seasonal affective disorder, sleep disorders, sexual dysfunction and insomnia. Results have shown that prolonged release of melatonin produces good results in treating insomnia in the elderly.

(1 per EA)

Methyl Nonafluorobutyl Ether (1 per EA )

Cuprous Chloride, Technical is also known as copper chloride and can appear green. It is a white solid and barely soluble in water. In hydrochloric acid, it is very soluble. Technical grade products supplied by Spectrum are indicative of a grade suitable for general industrial use.

(1 per EA )

Sodium Dichromate, Crystal, Reagent, also known as chromic acid disodium salt, is considered to be very similar to potassium dichromate in terms of reactivity and appearance. Dichromate and chromate salts are oxidizing agents. For the tanning of leather, sodium dichromate is first reduced with sulfur dioxide. The Reagent grade denotes that this chemical is the highest quality commercially available and that the American Chemical Society has not officially set any specifications for this material. Spectrum Chemical manufactured Reagent grade products meet the toughest regulatory standards for quality and purity.

(1 per EA )