CREATE TABLE table_170097_1 (pressure_in_hpa__mbar_ VARCHAR, vacuum_range VARCHAR)

What is the pressure in ultra high vacuum?
SELECT pressure_in_hpa__mbar_ FROM table_170097_1 WHERE vacuum_range = "Ultra high vacuum"
SELECT "pressure_in_hpa__mbar_" FROM "table_170097_1" WHERE "Ultra high vacuum" = "vacuum_range"