Turner Designs provides innovative optical-based solutions for environmental research and monitoring, water quality analysis, pollution control analysis, OEM, industrial, and marine applications. Having a unique focus on fluorescence instrumentation for over 45 years and customers throughout the world, they are a leader in optical instrumentation design, manufacture, and support. Turner Designs is known for providing rugged, reliable, and stable submersible, field, handheld, laboratory, and inline optical instrumentation varying in functionality, size and price. Most recent support to the marine industry comes from their Ballast-Check 2 for indicative compliance monitoring that has been independently proven to work with all treatment system types and water conditions.