Solar thermal systems are designed to deliver decades of efficient heating performance. Whether the system heats domestic hot water, supports radiant floor heating, warms a swimming pool, or supplements industrial process heat, the success of the installation depends heavily on one often-overlooked factor: the condition and concentration of the heat transfer fluid.

Most closed-loop solar thermal systems rely on a glycol-based heat transfer fluid, commonly propylene glycol, to protect collectors and piping from freezing while efficiently carrying heat from the solar collectors to storage tanks or heat exchangers. While the solar collectors themselves may receive the attention, the fluid circulating through the system is the true lifeblood of the operation.

This is where a refractometer becomes one of the most valuable maintenance tools a solar system owner, contractor, or facility manager can own.

For most people, the words tree syrup immediately bring one thing to mind: maple syrup. But across North America and parts of Europe, artisans, homesteaders, and specialty syrup producers are discovering that many other trees can also produce remarkable syrups with unique flavors, colors, aromas, and culinary uses.

If you sell maple refractometers, this growing niche market represents a major opportunity. Producers making birch syrup, black walnut syrup, sycamore syrup, boxelder syrup, butternut syrup, and even certain hickory-based products all need reliable ways to measure sugar concentration during sap collection and syrup finishing.

The good news is that the same refractometers used for maple syrup production are often highly useful for these alternative syrups as well. While there are some important differences in chemistry and processing, the core principle remains the same: measuring dissolved sugar solids (Brix) to control quality, consistency, and final syrup density.

Consistent feeding is one of the most important factors in successful catfish production. Whether managing a recreational catfish pond, a farm pond, or a high-density aquaculture system, the right automatic fish feeder can dramatically improve growth rates, feed conversion efficiency, and overall fish health.

Automatic catfish feeders also reduce labor costs, minimize feed waste, and maintain consistent feeding schedules that encourage predictable fish behavior. For channel catfish, blue catfish, and hybrid catfish operations, dependable feeding systems are often one of the most cost-effective investments pond owners can make.

Two popular feeder systems from NI Supply offer very different advantages depending on pond size, fish biomass, feeding frequency, and operating environment:

• The high-capacity solar-powered feeder
• The compact battery-powered feeder

While both automate feeding, each serves a very different purpose in catfish pond management.

Choosing the right automatic koi pond feeder is not just about convenience. It is about maintaining consistent fish growth, stable water quality, reduced waste, and healthier feeding behavior in your pond. For koi keepers, catfish growers, tilapia operations, and ornamental pond enthusiasts, an automatic feeder can dramatically improve feeding efficiency while reducing labor and missed feedings.

The two standout options from NI Supply are the extra-capacity solar-powered feeder and the compact battery-powered feeder. While both are designed for automatic pond feeding, they serve very different pond environments and fish populations.

Evans Waterless Coolant and the Critical Role of Refractometer Testing

Modern engines operate hotter, harder, and under more demanding conditions than ever before. High-performance vehicles, turbocharged engines, diesel trucks, off-road equipment, fleet vehicles, agricultural machinery, and classic cars all place tremendous stress on cooling systems. Traditional water-based antifreeze mixtures have served the automotive world for decades, but they also introduce several limitations that can compromise long-term reliability and thermal performance.

That is why many automotive enthusiasts, fleet operators, racers, and heavy equipment owners are turning to Evans Waterless Coolant as a superior alternative to conventional coolant systems.

Unlike traditional antifreeze mixtures that rely heavily on water, Evans Waterless Coolant is engineered to operate with virtually no water present in the cooling system. This fundamentally changes how the cooling system behaves and dramatically reduces many of the problems associated with conventional coolant.