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STX2-PLUS

World Precision Instruments 

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* Electrodes, batteries and other consumable parts are warranted for 30 days only from the date on which 

the customer receives these items.

WARRANTY

WPI (World Precision Instruments) warrants to the original purchaser that this equipment, including its 

components and parts, shall be free from defects in material and workmanship for a period of 30 days* 

from the date of receipt. WPI’s obligation under this warranty shall be limited to repair or replacement, 

at WPI’s option, of the equipment or defective components or parts upon receipt thereof f.o.b. WPI, 

Sarasota, Florida U.S.A. Return of a repaired instrument shall be f.o.b. Sarasota.

The above warranty is contingent upon normal usage and does not cover products which have been 

modified without WPI’s approval or which have been subjected to unusual physical or electrical stress 

or on which the original identification marks have been removed or altered. The above warranty will not 

apply if adjustment, repair or parts replacement is required because of accident, neglect, misuse, failure 

of electric power, air conditioning, humidity control, or causes other than normal and ordinary usage.

To the extent that any of its equipment is furnished by a manufacturer other than WPI, the foregoing 

warranty shall be applicable only to the extent of the warranty furnished by such other manufacturer. 

This warranty will not apply to appearance terms, such as knobs, handles, dials or the like.

WPI makes no warranty of any kind, express or implied or statutory, including without limitation any 

warranties of merchantability and/or fitness for a particular purpose. WPI shall not be liable for any 

damages, whether direct, indirect, special or consequential arising from a failure of this product to 

operate in the manner desired by the user. WPI shall not be liable for any damage to data or property 

that may be caused directly or indirectly by use of this product.

Claims and Returns

Inspect all shipments upon receipt. Missing cartons or obvious damage to cartons should be noted on 

the delivery receipt before signing. Concealed loss or damage should be reported at once to the carrier 

and an inspection requested. All claims for shortage or damage must be made within ten (10) days 

after receipt of shipment. Claims for lost shipments must be made within thirty (30) days of receipt of 

invoice or other notification of shipment. Please save damaged or pilfered cartons until claim is settled. 

In some instances, photographic documentation may be required. Some items are time-sensitive; WPI 

assumes no extended warranty or any liability for use beyond the date specified on the container

Do not return any goods to us without obtaining prior approval and instructions from our Returns 

Department. Goods returned (unauthorized) by collect freight may be refused. Goods accepted for 

restocking will be exchanged or credited to your WPI account. Goods returned which were ordered 

by customers in error are subject to a 25% restocking charge. Equipment which was built as a special 

order cannot be returned.

Repairs

Contact our Customer Service Department for assistance in the repair of apparatus. Do not return 

goods until instructions have been received. Returned items must be securely packed to prevent 

further damage in transit. The Customer is responsible for paying shipping expenses, including 

adequate insurance on all items returned for repairs. Identification of the item(s) by model number, 

name, as well as complete description of the difficulties experienced should be written on the repair 

purchase order and on a tag attached to the item.

Summary of Contents for STX2-PLUS

Page 1: ...WORLD PRECISION INSTRUMENTS STX2 PLUS for use with EVOM3 Epithelial Voltohmmeter Serial No _____________________ www wpiinc com INSTRUCTION MANUAL 082620...

Page 2: ......

Page 3: ...NG INSTRUCTIONS 3 Positioning Electrode in a Culture Cup 3 Stable Repeatable Readings 3 Ease of Use 3 Adjusting the Length of the Electrodes 4 MAINTENANCE 5 Cleaning Maintaining the STX2 PLUS Electrod...

Page 4: ...ii World Precision Instruments...

Page 5: ...rectly in 12 and 24 well tissue culture plates The electrode incorporates a adjustable pair of probes 5 mm tall 4 mm wide and 0 7 mm in thickness Each probe has an outer current and an inner voltage e...

Page 6: ...any parts are missing at 941 371 1003 or customerservice wpiinc com Returns Do not return any goods to WPI without obtaining prior approval RMA required and instructions from WPI s Returns Department...

Page 7: ...ility of the measurements is significantly improved Fig 2 Right Electrodes in solution Stable Repeatable Readings This new electrode design sets the correct depth and centering of the electrode elemen...

Page 8: ...a hanging insert Fig 6 Rotate the nut to adjust the length of the electrodes Fig 7 The electrode length is properly adjusted 2 Align the electrodes with the well inserts and position the STX2 PLUS ove...

Page 9: ...to your maintenance schedule and the frequency of your cleaning Soak the electrodes overnight when the electrodes have not been on a routine maintenance cleaning schedule Soak 60 minutes if you are o...

Page 10: ...us electrode must be dipped into chlorine bleach 5 sodium hypochlorite on occasion to maintain the amount of Ag to AgCl balance Otherwise the electrode will become unstable A 10 15 minute immersion of...

Page 11: ...should show an R2 value 0 99x NOTE These resistance readings can vary due to fluid volume and electrode depth These values are a reference An Excel scatter plot of the molarity vs resistance as a pow...

Page 12: ...ng Radio frequency interference Turn off or move any cellular phones farther away from the experimental setup NOTE If you have a problem issue with that falls outside the definitions of this troublesh...

Page 13: ...25 mL of 20 mM KCl 25 mL 50 mL 10 mM KCl APPENDIX B COMPATIBLE INSERTS AND PLATES Corning Millipore Material Membrane Diameter mm Growth Surface Area cm2 Membrane Pore Size m 3470 6 5 0 33 0 4 3472 PI...

Page 14: ...10 World Precision Instruments Millicell Membrane Pore Size m Qty Pkg MCHT24H48 0 4 48 MCRP24H48 1 0 48 MCSP24H48 3 0 48 MCMP24H48 5 0 48 MCEP24H49 8 0 48...

Page 15: ...special or consequential arising from a failure of this product to operate in the manner desired by the user WPI shall not be liable for any damage to data or property that may be caused directly or i...

Page 16: ...Tel 49 0 6031 67708 0 Fax 49 0 6031 67708 80 E mail wpide wpi europe com China Hong Kong WPI Shanghai Trading Co Ltd Rm 27A Liangfeng Building No 8 Dongfang Road Pudong New District Shanghai PR China...

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