China High quality easy to clean Porcelain funnel filter laboratory Manufacture and Factory

High quality easy to clean Porcelain funnel filter laboratory

Short Description:

The shape is flat cylinder, and the bottom surface of the cylinder is cut with many small holes. It is connected with a long and narrow tube outlet.

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Product Detail

Product Tags

Product Parameters

95%/99%/99.7% Al2O3 Ceramic Material Parameters
Item	Test Condition	95% Al2O3 Ceramic	99% Al2O3 Ceramic	99.7% Al2O3 Ceramic
Bulk Density (g/cm³)		>3.6	3.89	3.96
Maximum Use Temp(℃)		1450	1600	1650
Water Absorption(%)		0	0	0
ROHS Hardness		≥85	≥89	≥89
Flexural Strength MPa(psi×10³)	20℃	358(52)	550	550
Compressive Strength MPa(psi×10³)	20℃	2068(300)	2600(377)	2600(377)
Fracture Toughness Mpa m½	K(l c)	4-5	5.6	6
Thermal Expansion Coefficient(1×10-6/℃)	25-1000℃	7.6	7.9	8.2
Thermal Conductivity Coefficient(W/m°K)	20℃	16	30.0	30.4
Thermal Shock Resistance(℃)	△Tc	250	200	200
Dielectricity Constant	1MHz.25℃	9	9.7	9.7
Dielectric Strength (ac-kV/mm)(ac V/mil)		8.3(210)	8.7(220)	8.7(220)
Volume Resistivity (ohm-cm)	100℃	>1013	>1014	>1014

Product information

A funnel is a ceramic device used in the laboratory, also made of plastic, for filtration using vacuum or negative pressure suction.

The shape is flat cylinder, and the bottom surface of the cylinder is cut with many small holes. It is connected with a long and narrow tube outlet.

In use, the bottom of the cylinder is lined with filter paper, the funnel is inserted into the opening above the flask and the interface is sealed (for example, with a rubber ring). The side port of the beaker is connected with the pumping system. The solid and liquid mixture to be separated is then poured into the top, the liquid component is pumped into the beaker under negative pressure, and the solid remains on the top.

It is often used in organic chemistry experiments to extract crystals. After filtration in this case, a small amount of pure solvent can also be used on top to wash off the impurities on the crystal surface.

Before use, it is necessary to prepare suction equipment, such as vacuum pump, filter bottle, funnel holder (sealing ring), vacuum tube (rubber tube), filter paper, funnel, etc.

First, wet the filter paper with water and pump it, so that the filter paper is close to the bottom of the funnel, which can prevent the leakage of the things to be filtered. Pour in the filtrate, turn on the machine to pump, can stir a little, leaving only the filtered material.

Direct use of ordinary funnel, affixed with filter paper, connected to the pumping pump suction filter (instead of funnel) is not possible. Because the walls of the funnel are close to the filter paper, the negative pressure suction filter has no effect on it. Only the bottom corner of the funnel produces a pressure difference. Since the opening is large and has only one opening, it is easy to break. (Wet filter paper is not strong)

Product Details

High Temperature Resistance

It has the characteristics of high melting and boiling point and can be used at high temperature without being affected.

Electrical Insulating

Insulator has high resistivity at room temperature. It can be used in equipment requiring insulation.

Product Specification

Perforated, with Lid and Dise

Code	Volume (ml)	Inside Diam (mm)	Tube Diam (mm)	Total Height (mm)	Perforations No.
C-141	10	20	8	40	19
C-142	20	30	10	60	19
C-143	30	40	12	70	19
C-144	50	50	14	95	19
C-145	120	70	20	1250	37
C-146	200	90	24	140	61
C-147	400	100	28	170	91
C-148	600	125	32	190	127
C-149	1000	150	38	210	127
C-150	1300	180	46	240	169
C-151	1500	200	50	260	169
C-152	5000	250	56	300	217
C-152-1	6500	300	68	350	271

Instructions

1. Fold the filter paper in two folds and fold it into a 90° center angle.

2. Put the folded filter paper into three layers on one side and one layer on the other to form a funnel shape.

3. Put the funnel-shaped filter paper into the funnel. The edge of the filter paper should be lower than the edge of the funnel. Pour some water into the funnel mouth to make the wet filter paper adhere to the inner wall of the funnel, and then pour off the remaining water for use.

4. Install the funnel with the filter paper on the filter funnel rack (such as the ring of the iron stand), place the flask or test tube that receives the filtrate under the funnel neck, and place the tip of the funnel neck against the wall of the receiving container. .

5. When injecting the liquid to be filtered into the funnel, hold the beaker with the liquid on the right and hold the glass rod on the left. The lower end of the glass rod is placed close to the three layers of filter paper, and the beaker cup is tightly attached to the glass rod until the liquid flows into the funnel.

6. When the liquid passes through the filter paper and flows down the neck of the funnel, check whether the liquid flows down the wall of the cup and inject into the bottom of the cup. If not, move the beaker or rotate the funnel so that the funnel tip fits against the beaker wall.