Description

Microdialysis Syringes and Syringes Accessories include:

• Syringes
• Replacement Syringe Needles
• Replacement PTFE Syringe Plunger

Microsyringes 1, 2.5, 5 and 10 mL. Microsyringes, glass syringes with a 60 mm piston stroke. Syringe needles are pretreated to reduce degradation of labile molecules, such as catecholamines and their metabolites during a microdialysis experiment. 

Cleaning the syringe

Following the steps below, clean the syringe immediately after use to avoid crystallization of the solute. Please use an organic solvent that dissolves sample contaminants when cleaning the syringe. Methanol, acetone, hexane, & etc are generally suitable. 

Remove. Empty the syringe of perfusion fluid. Slowly aspirate deionized water/purified water up to maximum volume and discharge into separate container to prevent contamination. Repeat this motion 10 or more times to eliminate liquid inside.

Clean. If albumin or a colloid has been added to the perfusion fluid. Slowly aspirate cleaning solvent up to maximum volume and discharge into separate container to prevent contamination. Repeat this motion 10 or more times to eliminate liquid inside.

Important Notes:

Be mindful of the needle tip. Careful handling is recommended to prevent damage.

Aspirate and discharge liquid slowly during cleaning as the ID of the needle is small.

Do not soak the entire syringe in the solvent this may damage adhesive joints within the syringe.

Dry. Remove the plunger from the syringe and allow to fully air dry while placed on a clean non-woven cloth. Be sure to remove the plunger and needle. Air drying should not be performed exceeding 60°C.

Reassemble. After drying, check that there is no dust on the PTFE tip. Carefully push and insert the plunger straight into the syringe. Do not interchange the plunger with another syringe. 

Store. Store the syringe in a clean case under the following environmental conditions:

Ambient temperature: -10°C to 50°C

Humidity: 20% to 90%

Lighting: Avoid UV light. 

Plunger Care:

If the plunger-to-barrel contact becomes loose replacement of the PTFE tip or plunger replacement is required.

Avoid excessive pumping when the plunger is dry. Dry operation will cause wear of the PTFE tip.

PTFE Tip Replacement Procedure

Remove tip. Grasp the top seal with pliers and pull it downward as shown in the figure to remove it. Please note that if you grab it below the top seal, the tip part of the plunger may be bent or scratched.

Cutting the rear end of the PTFE tip prior can facilitate removal. If doing so, be careful not to scratch or damage the O-ring with a blade.

Prepare Surface. Remove any debris remaining on the plunger tip after removal.

Insert Tip. Place new PTFE tip on a clean, flat surface with the plunger straight and fully inserted into the PTFE tip.

Important Notes:

Make sure there is no gap between the PTFE tip and the plunger.

For placement of an O-ring, be sure to insert it while it is set in the plunger.

Please make sure that there are no scratches on the O-ring before using.

Plunger Replacement Procedure

Gently shake the replacement plunger in solvent and air dry on a clean non-woven cloth.

After drying, rinse the plunger tip in acetone for 1-2 seconds and carefully insert the plunger straight into the syringe.

Slowly make one stroke and check that there are no gaps or rattling between the PTFE tip and plunger.