Tartaric acid is mainly found in tart fruits such as grapefruit and unripe grapes, and is often used to help lower the PH in fermenting products.Tartaric acid is an essential component in wine and the main ingredient in cream of tartar.artaric acid is mainly found in tart fruits such as grapefruit and unripe grapes, and is often used to help lower the PH in fermenting products.
Pitching Wedge Loft. A typical pitching wedge contains about 45 degrees of loft. By comparison, the highest-lofted iron, the 9-iron, contains approximately 41 degrees of loft, while the gap wedge is typically lofted at 50 degrees. There is, however, no industry standard regarding each clubâs loft. Some manufacturers will build pitching wedges with more or less than 45 degrees of loft.
The short answer is that in the 1960s and early 1970s, there was no need for such a club. The loft of a Pitching Wedge was closer to 50-degrees then. The need for a Gap Wedge today results from a marketing ploy used by club manufacturers. Here's the story: Over the last four decades, there has been some creep to the nominal lofts and shaft lengths associated with each iron.