PASCO ME-6940 - Manuals - manualsarea.com

Page 2 - A b o u t t h e M e m b r a n e

M o d e l N o . M E - 6 9 4 0 A b o u t t h e M e m b r a n e 2 The ME-6940 Diffusion-Osmosis Apparatus is patent pending. *The ME-6942 Diffusion-Osmosis Kit includes the Diffusion-Osmosis Apparatus and the PASPORT Dual Pressure Sensor. The PASPORT sensors work with a PASPORT interface such as the o...

Page 3 - Membranes are; Maintenance and Care; U s i n g t h e A p p a r a t u s; Soak the membranes

M o d e l N o . M E - 6 9 4 0 U s i n g t h e A p p a r a t u s 3 • Membranes cannot be reused if they are allowed to dry out. Drying causes unrecoverable collapse of the pore structure. • Membranes are resistant to the following groups: halogenated hydrocarbons, alcohols, ketones, esters, oxides an...

Page 4 - Fill the cylinders; : Connect the sensor to the interface. View; Reduce the sampling rate; : If you are using the PASPORT Dual Pres-

M o d e l N o . M E - 6 9 4 0 U s i n g t h e A p p a r a t u s 4 • Ensure that the two holes of the membrane are lined up with the pegs on the cylinder and then carefully place the other cylinder against the membrane so that the two raised pegs on the second cylinder go into the two empty holes on ...

Page 5 - S a m p l e A c t i v i t y; Procedure; Obtain 40 mL of distilled water.; Materials and Equipment; PASPORT Interface

M o d e l N o . M E - 6 9 4 0 S a m p l e A c t i v i t y 5 so that they both measure atmospheric pressure (102 kilopascals) at the start of the experiment. If you are using other PASPORT sensors, calibrate them as instructed by the manual. 9. Experiment : Allow the processes of diffusion and osmosi...

Page 6 - Reduce the sampling rate to 1 sample per minute.; Data; Table 1: Fluid Volume

M o d e l N o . M E - 6 9 4 0 S a m p l e A c t i v i t y 6 7. Connect a PASPORT Dual Pressure Sensor to the interface. Set up digits displays for Absolute Pressure 1, Abso-lute Pressure 2 and 1-2 Differential pressure. Also set up a graph display for 1-2 Differential Pressure. 8. Reduce the samplin...

Page 7 - Table 3: Concentration; Data Analysis; Record the final volume of each solution in Table 1.; Analysis Questions

M o d e l N o . M E - 6 9 4 0 S a m p l e A c t i v i t y 7 Table 3: Concentration Data Analysis 1. Record the final volume of each solution in Table 1. 2. Calculate the change in volume in each column and record in Table 1. 3. Record the final pressure in the columns in Table 2. 4. Record the 1-2 D...

Page 9 - S a m p l e D a t a

M o d e l N o . M E - 6 9 4 0 S a m p l e D a t a 9 S a m p l e D a t a Graph of 1-2 Differential Pressure versus Time Graphs of Absolute Pressure 1 and 2 with Linear Fit Graph of 1-2 Differential Pressure with Linear Fit

Page 10 - Ta bl e 1 : F l u i d Vo l u m e; Analysis Questions and Answers; Answer

M o d e l N o . M E - 6 9 4 0 S a m p l e D a t a 10 Ta bl e 1 : F l u i d Vo l u m e Ta bl e 2 : P r e s s u r e Ta bl e 3 : C o n c e n t r a t i o n Analysis Questions and Answers 1. Is the change in fluid volume equivalent on each side of the apparatus? In other words, is the loss of volume on o...

Page 11 - A d d i t i o n a l E x p e r i m e n t s; A dd i t i o n a l E x p e r i m e n t s; Find the molecular mass (M; AP® Biology Lab 1: Diffusion and Osmosis*; Part one; R T

M o d e l N o . M E - 6 9 4 0 A d d i t i o n a l E x p e r i m e n t s 11 3. Calculate the final molarity of the solution in column #2 at the end of the experiment. Record in Table 3. Answer : First, determine the number of moles in column #2 at the beginning of the experiment. The initial volume o...

Page 12 - T e c h n i c a l S u p p o r t; Part two; Te ch n i c a l S u p p o r t; For assistance with any PASCO product, contact PASCO at:; Patents Pending; Replacement Parts; Item; Sensor Mounting Stud

M o d e l N o . M E - 6 9 4 0 T e c h n i c a l S u p p o r t 12 again for the presence of starch and glucose on both sides of the membrane. Students should observe the pres-ence of glucose on both sides of the membrane because glucose is small enough to cross the membrane. Starch is too large to cr...