Envco – Environmental Equipment

This compact device has become a staple in the field and works like a periphyton sampler. It’s the most adaptable artificial substrate sampler available and is EPA recommended. Suspend, float or attach it to submerged objects such as boulders or stakes. Leave it in place for two or more weeks, then scrape the “critters” off the plates and analyze them in the lab. Made of 1/8” (3 mm) thick tempered masonite for long field life, with nylon spacers and stainless steel hardware. Wingnut at the bottom for disassembly.

9-Plate Square Hester-Dendy
• 0.10m2 surface area
• 9 -76 x 76 mm (3 x 3”) plates

14-Plate Round Hester-Dendy (EPA)
• 0.16m2 surface area, length 8”
• 14 plages, 75mm (3”) diameter, separated with 8 single nylon spacers; 1 double; 2 triple; 2 quadruple

14-Plate Square Hester-Dendy (EPA)
Our larger square multiplate sampler has been well-researched in the field. Its 14 square plates are separated by 24 round spacers - 8 single, 1 double, 2 triple, 2 quadruple. Generally 5 are used together, tied to a weight to prevent contact with natural substrates. With 1/4” (0.64 cm) eyebolt.
• 14 plates, each 7.6 cm square (3”)
• 24 nylon spacers, each 2.5 cm (1”) diameter
• Surface area: 0.16 m2 (excluding eyebolt)

9-Plate Square Hester-Dendy
150-A10 9-Plate Square, each
150-A15 9-Plate Square, Pack 10

14-Plate Round Hester-Dendy (EPA)
150-A50 14-Plate Round, EPA, each
150-A55 14-Plate Round, EPA, Pack 10

14-Plate Square Hester-Dendy (EPA)
150-A90 14-plate Square, EPA, each
150-A95 14-plate Square, EPA, Pack 10