46 Pa. Stat. § 122
The Secretary of the Senate and the Chief Clerk of the House shall be the custodian of all stationery, and printed material, and the Chief Clerks of each House shall be the custodian of all supplies and equipment, and each shall have authority to requisition the Department of Property and Supplies, from time to time, for such supplies and equipment as may be necessary for each House, including members, officers, employes, committee and office work.
The purchase or rental of electric roll call and public address systems and all purchases of supplies, equipment and printed material, for the use of either House or the members, officers, employes, committees, or office work thereof, that are paid for out of money appropriated to such House or to a department for the use of either House shall be made by direct purchase by the Secretary or Chief Clerk of such House, with the approval of the Speaker or President Pro Tempore thereof, and not through the Department of Property and Supplies, unless purchase by the department is specifically requested by such officer of the House for which the purchase is made.
46 P.S. § 122