rubber policeman

Rubber policeman attached to a long glass rod 9.

Use a rubber policeman if necessary to clean sides of beaker.

Rubber policemen also come in one-piece flexible plastic versions.

Another 10 ml of PBS was added to the plate and the cells were scraped off the plate using a rubber policeman.

Electron microscopy Transfected cells were washed twice with PBS and scraped from the dish using a rubber policeman.

Stir contents of beaker containing drainings from Light Filth, Step 5.2.6, with rubber policeman for 30 sec. and allow suspension to stand undisturbed for 30 min.

The wells were scraped with a rubber policeman, and the lysates were removed and diluted for plating on TSA containing 10 μg kanamycin/mL.

Rubber policemen are also used in biological labs, to transfer tissue culture cells from a plate to a suspension for e.g. splitting of cells or the preparation of cell lysates.

Rubber policeman attached to a long glass rod Wash bottles Suction filtration apparatus with Buchner or Hirsch funnel (5-7 cm perforated plate) Ruled filter paper.

A rubber policeman is a hand-held flexible natural-rubber scraper attached to a glass rod used in chemical laboratories to transfer residues of precipitate or solid on glass surfaces when performing gravimetric analysis.

Transfer the analytical unit into 1 L beaker. Add 200 mL of water and hand stir vigorously with a rubber policeman for 30 s and allow suspension to stand undisturbed for 5 min.

Use a rubber policeman if necessary to clean sides of beaker. ▪ 5.2.12 Transfer filter paper(s) to petri dish(es) and moisten with glycerol-alcohol mixture. ▪ 5.2.13 Repeat isolation for remaining two analytical units.

Filter paper should be larger than funnel plate (7-9 cm) Petri dishes to suit size of filter paper used Rubber policeman attached to a long glass rod Stereoscopic microscope (10-30x) Ashless filter paper.