Kula-Przezwanski’s first record came in the 60-64 years’ 200m backstroke where she clocked 2:55.92 to break the old British best mark by 12 seconds.
She then knocked more than three seconds off the 200m IM record, clocking 2:58.45.
The European aquathlon champion also won gold in the 200m freestyle and claimed silver in the 50m backstroke, where she was only beaten by Ireland’s Liz Cozgrave, who set a new European record.
Meanwhile, Caradon Swimming Club enjoyed plenty of success at their own annual masters’ competition, which was held at Saltash.
The event attracted swimmers from 21 clubs from around the country with Caradon claiming 24 medals to first overall, with Truro finishing as the top visiting club.
The competition saw Mick Swift win gold and set two new Cornwall county records in the 200m and 400m freestyle 65-69 age group to end his competitive swimming career in style. Swift will retire from racing at the end of this month.
Jenson Cory was also in fine form getting into the county record books. Cory was competing in his first masters’ competition and set a new county record in the 18-24 100m breaststroke. He also won golds in the 50m butterfly, 50m freestyle, 100m freestyle and 100m IM.
Vicki Buck won four medals – gold in the 100m backstroke, a silver in the 50m backstroke and bronzes in the 50m breaststroke and 50m freestyle.
There were golds for David Smith in the 50m breaststroke and 50m backstroke. He also claimed a silver in the 50m freestyle.
Another Caradon swimmer topping the podium was Sam Crosby, who won golds in the 50m and 100m butterfly and 100m freestyle.
Susan Smith claimed silvers in the 200m freestyle and 50m breastroke and a bronze in the 100m freestyle, while Maria Szupleswski took silvers in the 50m breaststroke and 50m freestyle.
Caradon masters’ swimmers will be back in action on March 2-3 when they compete in the 2019 Swim Wales Open Masters & Seniors Championships in Swansea.