Terms and Conditions

By accessing our website, you, the user, agree to use the terms and conditions set out here. These terms and conditions may change at our discretion at any time and without prior notice. All orders and purchases made through this site are governed by these terms and conditions. The purchase of merchandise through the GrencoScience.com website is strictly limited to parties who can lawfully enter into and form contracts on the site in accordance with the laws of the jurisdiction of their residence. By entering the GPen.com website you agree that you will access the content solely for your personal, non-commercial use. All illustrations, designs, icons, graphics, photographs, pictures and any other items included in this website are the exclusive property of Grenco Science, Inc. unless otherwise stated. These Terms & Conditions apply to the purchase of goods from GPen.com only.


In these Terms and Conditions:

  1. “Seller”, “us” and “we” are references to the owner of this website, Grenco Science, Inc., which is a registered corporation in the USA.
  2. “Buyer”, “you” and “your” are references to the purchaser of the goods from us;
  3. “Goods” means the goods specified in the Seller’s invoice;
  4. “Contract” means the contract between Seller and Buyer for the sale and purchase of the Goods which incorporates these Terms & Conditions;
  5. “Terms” means these terms and conditions;
  6. “Site” means the GrencoScience.com website.
  7. Purchasing Goods Online

  8. In order to make purchases through the site, the buyer will be requested to register and provide personal details. In particular, buyers must provide their real name, phone number, e-mail address and other requested information as indicated.
  9. When ordering items, the buyer will be required to provide payment details and you represent and warrant that the payment details you provide on ordering are both valid and correct and you confirm that you are the person referred to in the billing information provided.
  10. When an order is made online, the order confirmation issued by the company clearing the credit/debit card payment does not constitute acceptance of your order by us. We reserve the right to check any discrepancies and an order will only be processed when it is verified by us to be accurate and within the guidelines set forth in these terms.
  11. All orders are subject to acceptance and availability.
  12. Any error in the ordering process due to technical or other reasons beyond the seller’s control entitles us not to treat the order as being binding on us.
  13. Purchases made on the site are for the personal or gift use of the buyer only and are not to be used for resale. The site displays products, which form its collection. They are normally products that are in stock and available for dispatch, however on occasion certain products that are in particularly high demand will sell out quickly. Should this be the case, you can contact our customer care department at help@grencoscience.com who will be happy to add your details to the waiting list and contact you should the item again become available to arrange payment.
  14. Your Order

  15. Once a choice has been made and the order has been placed, the buyer will receive an email acknowledging the details of the order. This email is NOT an acceptance of the order. Unless the buyer cancels the order in accordance with the seller’s Cancellation Policy, acceptance of the order and completion of the contract between buyer and seller will be perfected when we dispatch the goods to you.
  16. The sale contract is therefore concluded in the USA and the language of the contract is English. The contract will be subject to these terms and conditions and governed by US law and the buyer agrees to submit to the non-exclusive jurisdiction of the United States Courts in respect to any dispute that may arise under it.
  17. The seller reserves the right not to accept the buyer’s order in the event, for example, that we are unable to obtain authorization for payment or that the item ordered is out of stock.
  18. Your use of any Grenco Science product is subject to all agreements including the Terms of Use and Conditions.
  19. Grenco Science products are for sale strictly to individuals 21 years of age and over. Misrepresentation of a buyer's age is not the responsibility of the seller.
  20. All Grenco Science products are intended for use with essential oils, and contain heating elements and sensitive mechanics. The products are not intended for illegal purposes, included but not limited to the consumption of narcotics, THC, or THC derivatives (collectively "foreign combustibles"). The use of foreign combustibles or other unintended materials may result in damage to the contents of the product or degradation of the materials and mechanics within the product. Any warranty, express or implied, shall be voided by improper use. By opening the packaging, you confirm your acceptance of the Terms of Use.
  21. Price

  22. Prices shown on the site are in U.S. Dollars (USD). All prices and offers remain valid and as advertised from time to time. The price of a product displayed on the site at the time the order is accepted will be honored.
  23. If the buyer is from outside of the United States, the buyer may also incur duties levied by the jurisdiction to which you have specified delivery. International shipments may be subject to import duties and taxes upon arrival in the destination country. These duties and taxes are the responsibility of the customer. Furthermore, a buyer from outside the U.S. may also be subject to higher postage and packaging costs. The seller reserves the right to request additional shipping fees prior to the Goods being dispatched, and to not accept the order should the buyer not fulfill the seller’s requests to pay additional postage and packaging fees.
  24. Payment

  25. Payment for Goods and for the cost of packaging and delivery where applicable must be made before the Goods are dispatched.
  26. Payment can be made by Visa, Master Card, Discover, or American Express. In all cases, delivery will not occur until we are satisfied that the payment has cleared.
  27. If the issuer of the buyer’s payment card refuses to authorize payment to the seller, we will not be liable for any delay or non-delivery.
  28. All credit card transactions on this site are processed using a secure online payment platform that encrypts your card and/or banking details in a secure host environment. The seller does not hold any credit card details on our site or in our customer database.
  29. Delivery

  30. The seller will give the buyer an estimated delivery date for the goods, but no such estimated times or dates provided by us are guaranteed. Orders may take between 3-5 business days for processing prior to shipment.
  31. International orders can be subject to holds and clearance delays due to international customs. These delays can not be predicted or altered in any way.
  32. The seller will arrange for packing according to the method of delivery chosen by the buyer during the checkout process.
  33. Should the buyer opt out of Route Package Protection at checkout, they release the seller from any liability of the shipment.
  34. The buyer must check the goods immediately upon delivery and contact the seller if there are any problems with the goods. The buyer must notify the seller within 24 hours of delivery to ensure prompt attention as completed orders are filed away daily.
  35. In the case that the goods have been damaged in transit, the buyer must keep all packaging, as this may be required when making a claim.
  36. The seller will not be liable for any loss, damages or penalty resulting from delay in delivery of the goods when such delay is due to causes beyond the reasonable control of the seller, including without limitation, supplier delay, force majeure, act of God, labor unrest, or fire. In any such event, the delivery date will be deemed extended for a period equal to the delay.
  37. Cancellations, Returns & Exchanges

  38. Once an order has been placed, it is able to be canceled prior to shipment. If a shipping label has been made for the order, it is too late to cancel and must be returned in its original packaging.
  39. In order to qualify for exchange/store credit, the goods or packaging may not have been open, damaged, or used. Once the outer packaging has been removed from the product, it is considered final sale and cannot be returned.
  40. The seller’s chief objective is to ensure the buyer is fully satisfied with their purchase. The notice of exchange or return has to be made in writing; an email will suffice: help@grencoscience.com. In the event of a return or exchange, we require that you return the goods to us at your own cost. Mystery Boxes or bundles are considered final sale and cannot be returned.
  41. In order to help with your order issue, you must open a ticket with our Customer Service department by emailing help@grencoscience.com within the cancellation period.
  42. Our return address is detailed on your original invoice or will be provided by customer service.
  43. The buyer must take reasonable care of all goods in their possession and return them to us, with their original packaging, within 7 business days from the date the return was authorized. Any item returned in an open or used state will be subject to a 50% restocking fee.

Limited Warranty

At Grenco Science, we stand behind our Products and warranty our electronic components against manufacturer defects.

1-Year Limited Warranty

Program includes the G Pen Elite Vaporizer™, G Pen Pro Vaporizer™, G Pen Connect Vaporizer™, G Pen Roam Vaporizer™. This includes all special edition or Artist Series versions of these Products.

2-Year Limited Warranty

Program includes the G Pen Dash Vaporizer™, G Pen Micro+ Vaporizer™, G Pen Hyer Vaporizer™, G Pen Dash+ Vaporizer™, and G Pen Elite II Vaporizer™. This includes all special edition or Artist Series versions of these Products.

Limited Warranty Terms

  • Warranty requires a valid proof of purchase, showing the date and location of purchase. If the purchase was made from gpen.com, your order number will be the proof of purchase.
  • Register your device at https://www.gpen.com/pages/register to validate your purchase upon receipt to initiate your warranty.
  • For warranty support, email us at help@grencoscience.com or complete our contact form. You will receive a reply within 2-3 business days from one of our representatives who will verify your purchase and request evidence of the issue. Once verified, a representative will reach back to resolve your case. Please allow 7-10 business days for processing.
  • Warranty service will require diagnosis and approval through video submissions at the discretion of Grenco Science.
  • If the Product is no longer available for sale and a replacement is deemed necessary, you will be given the option to replace the Product with a unit of equal value or credit toward a new Product.
  • Warranty is not applicable to mouthpieces, tanks or coils. Such consumable parts wear down with normal use and need to be replaced over time.
  • Warranty is not applicable to physical damage.
  • Warranty does not cover wear and tear from regular use.
  • Warranty does not cover physical damage to charging cords or ports.
  • Warranty does not cover natural degradation to battery life.
  • Warranty is not applicable to glass unless damaged during delivery of the order.
  • Warranty does not cover water damage.
  • Warranty does not cover cosmetic damage or any damage resulting from normal cleaning or misuse.
  • Warranty is not applicable to counterfeit items. We caution consumers that Grenco Science goods purchased on sites such as eBay, Amazon, Bonanza, Alibaba and Rakuten are often found to be counterfeit goods.
  • Warranty does not cover lost or stolen items or parts.
  • Warranty is limited to locations where direct-to-consumer shipments are possible.
  • Warranty is not applicable to merchandise. All merchandise sales are final.

Modification or change of any Product by consumer or any other party may void this limited warranty. Damage due to accidents, misuse, negligence, improper use, unintended use, storage or transport is not covered. Damage due to exposure to the elements or chemicals is not covered.


Manufacturer's obligations under this limited warranty are limited to the repair or replacement, at its sole discretion, of the Products which are determined by Manufacturer to be in compliance with this limited warranty. Unauthorized shipment or shipment contrary to company's instructions will void this limited warranty. The Company will solely determine final disposition of any warranty claim.


In order to shop on the seller’s site all users must be registered. The details provided are saved in our database in order to process the order and to facilitate and speed up future purchases. Please see our Privacy Policy for more details regarding how Grenco Science manages this information.

Opt-in Opt-out Policy

Users of this site may access, amend or delete any data filled in on the registration form at any time; either in writing, or via email at help@gpen.com.

The seller may from time to time contact you by email with information on new products; special discounts or other information we believe may be of interest to you. Any email we send you will contain an easy unsubscribe link from all future mail shots.

Our Liability

The website is accessed and used at your own risk. Although reasonable efforts have been made to ensure that all details on the website are current and contain no inaccuracies or errors, no guarantees are made that the website’s content will be error free, accurate and current at all times.