Check the listing for details. Aquarium Co-op: Ammonia Test Strips. Condition: Brand New. Listed at 24.12 USD. Measures: Ammonia (ppm) 100 Tests Strips Laminated Index Card The Ammonia Test Strips by Aquarium Co-Op allow you to quickly and easily test the ammonia levels in your aquarium water. These strips come with a laminated comparison card to help you interpret the results. With just 30 seconds of testing, you can ensure that the levels of ammonia in your aquarium are at safe levels and take action if necessary to maintain the health of your aquatic pets. The colour chart provided makes it easy to understand your readings and take the appropriate steps to keep your aquarium healthy. Multiple item discount: If you are interested in purchasing multiple items, we would be happy to offer a discount. Please send us a message with a list of the items you are interested in and we will create a personalised listing for you with the discounted price. Combined shipping is also provided. A personalised listing is a listing where your name is added to the title of the listing. It will include the discounted price for the items that your interested in purchasing. The description and/title will contain a list of the items. The link to the listing is emailed to you via ebay. We look forward to working with you! Shipping: We offer free shipping for orders over $100. For orders under $100, calculated shipping will be applied. If you are interested in purchasing multiple items and would like to take advantage of combined shipping, please place all items in one transaction and contact us prior to purchasing for an estimation of the combined shipping cost. The combined shipping cost will be based on the weight and dimensions of the items being shipped and will be calculated at the time of checkout. If the combined shipping cost is less than the amount charged, the excess will be refunded through eBay. Tracking information will be added to eBay upon shipment.