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Transparency / Turbidity Tube ( Code:TT ) Just as a Secchi disk is used as a measure of lake quality, a transparency tube can be used to estimate stream quality as it relates to solids in the water. Similar tools are called, Australian turbidity tube, or sediment stick. Citizen groups, schools and local governments can use transparency tube readings as a relative measure of stream quality. The 1 ¾ inch, clear polycarbonate tube is marked with an easy to read black numbers on a white tape in centimeters. Two lengths are available: 60 cm. and 120 cm. A drain tube with a crimp are supplied so the sample can be drained off until the "Secchi" pattern on the bottom just appears. The height of the water column is then recorded. Quantity discounts are available. Made with Secure StopperTM. Made in the USA. 60 cm Price: US $43.00.
120 cm Transparency / Turbidity Tube ( Code:TTG ) Polycarbonate 1.2m/120cm Transparency Tube - GLOBE® -compliant. (Click here to go to the GLOBE® Program®'s protocols page.) Made with Secure StopperTM. Made in the USA. Quantity discounts are available. Price: US $58.00.
Transparency / Turbidity Tube Replacement Stopper ( Code:TTRS ) A replacement stopper for the end of the turbidity tube with Secchi pattern. Price: US $19.95.
More info on the turbidity tube (measuring transparency and instructional resources)
Secchi-Tube (Code ST-60) or (ST-120) The Secchi-Tube is designed to function like the traditional Secchi disk that is used in lake monitoring. A weighted Secchi disk is lowered into the tube by a line, allowing the user to raise and lower the Secchi disk within the same water sample numerous times. This method allows for averaging the water transparency readings. At the top of the Secchi-Tube is a hole that drains excess water off to bring the water sample level down to the "zero" mark on the centimeter scale. The Secchi-Tube is made of polycarbonate with an easy-to-read centimeter tape. Features the Secure StopperTM and all stainless steel hardware. 60 cm Price: US $45.00. 120 cm Price: US $58.50.
More info on the Secchi tube (measuring transparency and instructional resources)
What's the Difference Between the Turbidity and Secchi Tubes?
If your protocols requires multiple readings on the same sample the Secchi tube allows a person to do so without having to re-pour the sample into the tube. The Turbidity tube requires catching the sample in a bucket and then pouring the sample back into the tube. The Secchi-tube does not allow unsuspended material to settle on the disk as readily as the turbidity tube does with its stationary black and white disk.
Artificial Substrate Basket ( Code: ASB ) For years the chicken barbecue basket was used, only to rust and fall apart in a season or two. This Artificial Substrate Basket is made of one inch square, 14 gauge galvanized wire with a PVC coating. These baskets withstand use in both fresh and salt water. The cylindrical basket measures 6½ inches in diameter and 11 inches in length. One end is hinged and tied with a nylon releasable tie. The other end is permanently fastened to the cylinder. For shallow water areas see item: RRB below. Price: WAS US $27.95 CLOSEOUT SALE PRICE: US $24.00 Quantity discounts available.
Riffle Rock Bags ( Code: RRB ) TThis bag is especially effective in low water areas providing maximum flexibility to conform to the streambed. The bag is made of rugged nylon twine with the mesh size 1 sq. in. The bag is 22 inches long with a wide mouth opening. The mouth has a durable cord and grip closure. The ASB and RRB maintain the same parameters in both volume and mesh size.Price: US $29.00 Quantity discounts available.
Wash / Sieve Bucket ( Code: SB ) The sieve bucket is a large 13 liter/3+ gal., heavy duty bucket with a molded pouring spout and sturdy metal handle with a plastic grip. The bottom of the bucket is cut out and replaced with stainless steel screening to match your protocol; the screening is reinforced with a 1/4 inch mesh galvanized hardware cloth bottom. This new bottom is fastened to the bucket wall using stainless steel finish washers for a smoother interior. Price: US $98.00
View Bucket (Aqua Explorer View Bucket) Code: VB This aquatic view bucket is made of a rugged 5 gallon bucket with the lid containing an acrylic lens, which yields a 9¼ inch viewing area. The lens is recessed in the lid to provide protection from abrasion when the bucket is set down. The acrylic lens is replaceable. The black interior cuts down on the internal reflection. The two handles make for stable maneuvering and the all stainless steel hardware resist corrosion in both fresh and salt water. The View Bucket is ideal for observing streambed morphology, invasive aquatic plants and the monitoring of other aquatic life as well as locating moorings and other lost items. Price: US $98.00
Hester-Dendy Multiplate Sampler (Code: MPSS) This square variety of the Hester-Dendy style sampler has nine, 3" square plates, each 1/8 inch thick. The eight spaces between the plates are uniform at 1/8 inch increments. The most moisture resistant tempered hardboard produced is used. The board is smooth on both sides. A Stainless steel eye bolt is used to fasten the plates together. EPA compliant. Price: WAS US $20.99 CLOSEOUT SALE PRICE: US $16.00