Rubber bulb for glass Pasteur pipettes Producator Labbox Made of natural latex rubber Capacity 2ml L 40 mm 100ea/pack" PACK 1 78.93 "Vaselina siliconica Producator MerckMillipore Solubility passes test penetration in rest about 240 - 260 mpr" 100 G 1 249.32 ETER DE PETRO 40-60 C, PA, Producator Chimreactiv 900 ML 3 22.50 "n-Heptan pentru analiza; EMSURE® Reag. Ph Eur, Producator Merck Purity (GC) ≥ 99 % Identity (IR) conforms Color ≤ 10 Hazen Free acid (as CH₃COOH) ≤ 0.0005 % Density (d 20 °C/20 °C) 0.683 - 0.686 Refractive index (n 20/D) 1.387 - 1.388 Boiling range (97°C-98°C) ≥ 95 % (v/v) Aromatic hydrocarbons (as C₆H₆) ≤ 0.1 % Sulfur compounds (as S) ≤ 0.005 % Readily carbonizable substances conforms Al (Aluminium) ≤ 0.00001 % B (Boron) ≤ 0.000002 % Ba (Barium) ≤ 0.00001 % Ca (Calcium) ≤ 0.00005 % Cd (Cadmium) ≤ 0.000005 % Co (Cobalt) ≤ 0.000002 % Cr (Chromium) ≤ 0.000002 % Cu (Copper) ≤ 0.000002 % Fe (Iron) ≤ 0.00001 % Mg (Magnesium) ≤ 0.00001 %" 2.5 L 2 206.87 "Tetrahydrofuran, 99.8+%, for analysis, stabilized with 0.025% BHT, Producator Fisher Chemical, Acidity/alkalinity (meq/g) <= 0.0002 meq/g Assay (GC) >= 99.8 % Calcium (Ca) <= 0.5 ppm Colour <= 10 APHA Copper (Cu) <= 0.05 ppm Iron (Fe) <= 0.1 ppm Lead (Pb) <= 0.05 ppm Magnesium (Mg) <= 0.1 ppm Methyl tetrahydrofuran <= 0.1 % Peroxide <= 0.0025 % Potassium (K) <= 0.5 ppm Residue after ignition <= 0.002 % Sodium (Na) <= 1 ppm Total phosphorus (P) <= 0.1 ppm Total sulfur (S) <= 0.5 ppm Water <= 0.03 % Zinc (Zn) <= 0.