E-C Apparatus Corporation EC4000P

Series 90 Programmable Electrophoresis Power Supply


Fully powers on

All 4 output channels tested with voltage present

Output voltage set to 600V and confirmed on multimeter

Gradual voltage ramp observed – consistent with programmable wattage/time limit design

Display, keypad, and LED indicators working


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📌 **Condition:**

Used, in good working order. The unit powers on and delivers voltage on all output ports. Voltage ramps up gradually toward the setpoint (600V), which appears to be a normal behavior related to programmable watt/time limits. See photos for test output using a multimeter.


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📦 **Included:**

- EC4000P main unit only

- No leads, cables, or documentation included


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📝 **Notes:**

- Cosmetic wear and scuffing on sides (see detailed photos)

- Sold **AS-IS** with no additional calibration or warranty

- Ideal for lab use, electrophoresis, voltage testing or parts reuse


Actual unit shown in the photos.


📦 YH Surplus Store – Shipping & Return Policy (English Only)



📦 Shipping Policy


We ship worldwide from Taiwan.

Due to variations in destination and item size, eBay’s fixed shipping templates may not always reflect the most accurate cost, especially for large or heavy items.

If you’d like a precise shipping quote, please message us with your country and postal code before purchasing.

We primarily ship via UPS, FedEx, or DHL, and will always choose the best option based on your region unless otherwise requested.

If you prefer a specific courier or plan to use your own shipping agent, just let us know.

Local pickup is available by appointment and can be arranged for freight or ocean cargo shipments. Please provide your eBay pickup QR code or 6-digit authorization code prior to collection.



🌐 Customs Duties, Import Taxes & Clearance Responsibility


All international buyers are fully responsible for any applicable customs duties, import taxes, or clearance fees in their country. These costs are not included in the item price or shipping charge.

Import duty rates are based on the country of origin (as shown on the item’s label), not the country of export.

If you are interested in purchasing, please check the product photos for any visible country-of-origin labels.

If the label is not shown, we are happy to provide additional photos upon request so you can check the applicable import duty rate yourself before purchasing.

While we take care to prepare all documents correctly, customs processing times and import policies vary by country, and delays may occur.

⚠️ If a package is returned due to customs issues, the original shipping cost and any return shipping fees will be deducted from the refund.

💬 If you have special instructions for customs declarations or invoice values, please contact us in advance. All such requests must be confirmed before shipment.



🔁 Return Policy


We do not accept returns or refunds.

All items are sold as-is, and we make every effort to present their actual condition honestly through detailed photos and descriptions.

If you require additional testing, specific photos, or a video demonstration of functionality, please reach out before purchase — we are happy to assist upon request.

Our pricing is based fairly on the item’s actual condition. We are not a refurbishing or certified repair company, and full functionality cannot be guaranteed — especially for complex or legacy systems.

We kindly ask that you purchase only if you fully understand and accept the item’s current state.



🙏 Final Note


Thank you for your understanding and support. We are committed to open and honest communication — please feel free to contact us with any questions before purchasing.