This 20cm diameter secchi disc is made of Sintra PVC.
|Image||Part #||Product Description||Price||Stock||Order|
|77912||Limnological weighted secchi disc||
|Usually ships in 3-5 days|
Lake Tahoe is one of the clearest lakes in the United States, helped by the relatively small size of its surrounding watershed and the granitic basin it sits in. Around 1968, the first year that its clarity was measured by Secchi disk, Tahoeâ€™s blue waters were even clearer than they are today. Measurements at that time show an average yearly clarity of more than 100 feet. But such clarity was never reported again as its waters began a decline that lasted well into the 1990s. At that point, the decline of average annual clarity measurements leveled out and stabilized, which is better news than it sounds.Read More
A monitoring initiative named for Secchi disks encourages people across the world to test the water nearby from the end of June through mid-July. Itâ€™s called the Secchi Dip-in and its organizers want anyone with the means to test their local water to do so and report back. Â The database is open to contributions from June 29 through July 21. Volunteers, monitoring groups and professionals alike can contribute data to the Secchi Dip-in database. Â Turbidity data is the main information Secchi Dip-in organizers want to see, but they wonâ€™t turn down any kind of water quality data people contribute. They encourage interested environmentalists to go out with someone who is experienced in testing for water quality to ensure data is accurate.Read More
Carbon dioxide, CO2, is a waste product for animals, including humans. That means that too much of it can be dangerous. In humans, excessive exposure to CO2 can kill, but in lesser amounts it can also affect the blood's pH level, causing acidemia. Acidemia can cause nerve damage , including hallucinations, delirium, and seizures. Far less is known about the subtler effects of CO2 on cephalopods, but this is in large part because far less is known about cephalopods, generally. However, new research from scientists at James Cook University (JCU) in Australia reveals that rising levels of atmospheric CO2 may cause strange behavioral effects in cephalopodsâ€”effects that are likely to be dangerous to them.Read More
Fondriest can ship orders within the 50 United States only. Orders cannot be shipped to PO Box addresses, United States territories, freight forwarders or addresses outside of the United States. Products purchased at Fondriest may not be exported.
Shipping, Delivery, Order Processing & Product Availability
Fondriest uses the best carriers to make sure orders gets to you on time. Learn more about shipping times, methods, costs, and carriers.
We keep you informed. Shortly after you place your order, you will receive an Order Acknowledgement email to confirm your order details, including shipping and a delivery estimate. Once your order has been prepared for shipment and ships, you will receive a Shipment Notification email with carrier and tracking information.
Shipping and Delivery Estimates
The 'Ships' timeframe is an estimate of when the item will ship from our warehouse. All items will ship at one time unless you specifically request partial shipment. In which case, the items on your order will ship as they become available. The 'Delivers' timeframe is an estimate of when the item will be delivered to your shipping address after it ships. The estimated delivery time depends on the shipping method you choose during checkout. All estimates are based on business days.
Fondriest offers several convenient shipping options.
|Standard Shipping:||Products shipped via standard service are normally delivered within five business days after shipment.|
|2-Day Shipping:||For an additional charge, Fondriest offers this expedited shipping option for most products. Products shipped via two-day service prior to 4:00 p.m. EST are normally delivered by 4:30 p.m. local time two business days after shipment.|
|Overnight Delivery:||For an additional charge, Fondriest offers this expedited shipping option on most of products. Products shipped prior to 4:00 p.m. EST via overnight service are normally delivered by 4:00 p.m. local time one business day after shipment. Contact Fondriest for earlier overnight delivery options.|
|Your Account:||For no additional charge, Fondriest offers shipment on your account for most popular carriers.|
Remember that these estimates are for time in transit only, and that they do not apply until the product leaves the Fondriest warehouse. As the delivery of your order is beyond Fondriest's control once your order leaves the Fondriest warehouse, we cannot assume liability for late deliveries, regardless of the delivery method you specify.
Signature Required on Most Deliveries
Most of Fondriest's shipments contain valuable equipment. If you will not be at the shipping address to accept delivery of your product, consider shipping the item to an address where someone you trust will be available to sign for your package, or accept your package if a signature is not required for the delivery. Once your order has prepared for shipment or has shipped, we are unable to change the shipping address. Title and risk of loss to all products will pass to you on delivery. If you are willing to assume the risks of delivering your order without a signature, you may authorize Fondriest to arrange for a delivery that does not require anyone to be at the delivery address.
Occasionally packages are returned to Fondriest as undeliverable. When the carrier returns an undeliverable package to Fondriest, please contact us to make arrangements for reshipment.
Failed Delivery Attempts
Most of Fondriest carriers make three attempts to deliver a package. After three delivery attempts, the carrier will return the package to Fondriest.
The estimated shipment date on your order is based on product availability, payment processing time, and warehouse processing time and does not include transit time. We do not begin payment processing until Fondriest receives all of the information that is needed and full payment or a full authorization, in the case of credit card or rental orders.
Fondriest will begin payment processing for orders placed on weekends or holidays on the next business day. Business days are Monday through Friday, excluding federal holidays.
Your order for in-stock items that are eligible for same-day shipping must be received before your local time of 2:00 p.m., pending payment processing, for there to be adequate remaining time in the day for your order to be dispatched.
Fondriest makes every effort to ship your product according to the estimated lead times. The estimated lead times are in business days (Monday through Friday, excluding federal holidays).
Although Fondriest makes every effort to ship your order according to the lead time provided, shipping dates may change due to changes in supply. If the lead time changes, Fondriest will contact you via email and provide a revised shipping estimate.
Fondriest makes every effort to supply the products you order, but there may be occasions when Fondriest confirms orders and later learns that it cannot supply the products, either at all or in the quantities ordered. Although rare, these occasions can include when Fondriest learns that the products no longer are being manufactured or they otherwise become unavailable, when Fondriest cannot source components for the configuration you ordered, or when there was a pricing error at the Fondriest Online Store.
In those circumstances, Fondriest will inform you and, if you are interested, Fondriest may suggest alternative products that may meet your needs. If you do not wish to order alternative products, Fondriest will cancel your order for products that cannot be supplied and for any other products that you no longer wish to order as a result, and will refund your purchase price.
If you are not satisfied with your purchase from Fondriest Environmental, you have up to 14 calendar days from the time you receive your item(s) to initiate a return. Please request a Return Material Authorization (RMA) by contacting your account representative or the general customer support address: firstname.lastname@example.org.
Items returned for credit must be new, unused, and in the original packaging (including any accessories, manuals, and documentation that shipped with the product). Returned items must be received by Fondriest Environmental within 14 calendar days of the issuance of the RMA. Upon inspection, Fondriest will issue a credit based on the original method of payment. Non-inventory items may be subject to the manufacturer's restocking fee.
Please note that Fondriest does not permit the return of or offer refunds for the following products:
Fondriest recommends using a carrier that offers shipment tracking for all returns. Packages should be insured for the full value in case of loss or damage. Fondriest does not assume any liability for loss or damage to the product during shipping.
At Fondriest, we are committed to providing high quality products at affordable prices with the industry’s best support. Additionally, we offer:
High volume purchases lead to favorable pricing, which is passed on to the customer by way of discount off MSRP.
Sensors and instruments are assembled, tested and calibrated prior to shipment. A calibration report is included.
A knowledgeable staff of application engineers provides ongoing support for the life of the product.
Application engineers are available for webinars or personalized, on-site start-up and training. Extensive measurement technology, product troubleshooting and instrument repair workshops are offered at the factory.
Warranties extended beyond factory standards are offered on many items to ensure a lasting useful life.
A factory-authorized service center provides fast-turnaround product repair and annual maintenance.
Rental equipment is available to minimize downtime and cover equipment needs when projects expand.
Call, email or chat online with application engineers. Email correspondence is responsive and a toll free number is available for added convenience.
Many orders ship on the same day and expedited shipping is available. If a product cannot be shipped immediately, customers are notified by phone or email.